In The Name of Allah, The Most Merciful, The Bestower of Mercy.

Some Great Outcomes of Truthfulness, Accepting Full Responsibility for One’s Actions, and Rushing to Repentance-  [Some Great Lessons From The Story of Kab Bin Malik (may Allah be pleased with him)]

Al-Allamah Rabee Bin Haadi Al-Mad’khali [may Allah preserve him] said:

All praise and thanks be to Allah, and peace and blessings be upon Allah’s Messenger, his family, companions, and those who follow his guidance. To proceed: Truthfulness is one of the greatest foundations of the (Islamic) religion and worldly affairs, neither can worldly affairs be upright nor can the religion be established on lies, betrayal, and deceit. The relationship between the Messengers and those who believed in them was one of truthfulness and affirmation of truth. Allah (The Exalted) said:

وَالَّذِي جَاءَ بِالصِّدْقِ وَصَدَّقَ بِهِ أُولَئِكَ هُمُ الْمُتَّقُونَ * لَهُمْ مَا يَشَاءُونَ عِنْدَ رَبِّهِمْ ذَلِكَ جزَاءُ الْمُحْسِنِينَ

And he (Muhammad) who has brought the truth (this Quran and Islamic Monotheism) and (those who) believed therein (i.e. the true believers of Islamic Monotheism), those are Al- Muttaqun (the pious and righteous persons). They shall have all that they will desire with their Lord. That is the reward of Muhsinun (good-doers). [Surah Az-Zumar. Ayaat 33-34]

And Allah stated regarding lying:
فَمَنْ أَظْلَمُ مِمَّنْ كَذَبَ عَلَى اللَّهِ وَكَذَّبَ بِالصِّدْقِ إِذْ جَاءهُ أَلَيْسَ فِي جَهَنَّمَ مَثْوًى لِلْكَافِرِينَ

Then, who does more wrong than one who utters a lie against Allah, and denies the truth [this Quran, the Prophet (Muhammad), the Islamic Monotheism, the Resurrection, and the reward or punishment according to good or evil deeds] when it comes to him! Is there not in Hell an abode for the disbelievers? [Surah Az-Zumar. Ayah 32]

Due to the status of truthfulness and affirmation of truth in the Sight of Allah, in Islam, among people of sound intellect and people of sound natural disposition, and the good outcomes of (truthfulness and affirmation of truth), as well as the danger of lying and denying the truth, I wanted to convey this statement, which is derived from Allah’s Book, the Sunnah of Allah’s Messenger, the biography and circumstances of some of the truthful people and truth affirmers among the companions of Allah’s Messenger. I beseech Allah to help and guide me in doing everything I can to offer advice and clarification to my Muslim brothers, and I beseech Him to place us all among the truthful, those eager to adhere to and steadfast in it, and among those who love the truth, those active in following and believing in it.

Because of the greatness of truthfulness in the Sight of Allah, the Muslims, and people of sound intellect among humankind, Allah described Himself as one who is truthful. Allah [The Exalted] says:

قُلْ صَدَقَ اللَّهُ فَاتَّبِعُوا مِلَّةَ إِبْرَاهِيمَ حَنِيفًا وَمَا كَانَ مِنَ الْمُشْرِكِينَ

Say (O Muhammad): “Allah has spoken the truth; follow the religion of Ibrahim (Abraham) Hanifa (Islamic Monotheism, i.e. he used to worship Allah Alone), and he was not of the polytheists]. [Surah Aal Imran. Ayah 95]

This is praise – with this great description- given by Allah to Himself, because He is truthful in all of His reports, speech, and legislation, in what He narrated about the Prophets and their nations, and in what He narrated about the Children of Israel- their prophets, believers, sinners and those who disbelieved among them, and about their distortion of Allah’s Book – the Tawraat and the Injeel, and that they took the rabbis and monks as lords besides Allah. (Footnote a)

Allah [The Exalted] said:

وَمَنْ أَصْدَقُ مِنَ اللَّهِ حَدِيثًا

And who is truer in statement than Allah?

[Surah An-Nisaa. Aayah 87]

Allah [The Exalted] said:

وَعْدَ اللَّهِ حَقًّا وَمَنْ أَصْدَقُ مِنَ اللَّهِ قِيلاً
Allah’s Promise is the Truth, and whose words can be truer than those of Allah? (Of course, none).

[Surah An-Nisaa. Aayah 122]

Allah [The Exalted] said:
وَمَا أَرْسَلْنَا قَبْلَكَ إِلَّا رِجَالًا نُوحِي إِلَيْهِمْ فَاسْأَلُوا أَهْلَ الذِّكْرِ إِنْ كُنْتُمْ لا تَعْلَمُونَ
وَمَا جَعَلْنَاهُمْ جَسَدًا لَا يَأْكُلُونَ الطَّعَامَ وَمَا كَانُوا خَالِدِينَ
ثُمَّ صَدَقْنَاهُمُ الْوَعْدَ فَأَنْجَيْنَاهُمْ وَمَنْ نَشَاءُ وَأَهْلَكْنَا الْمُسْرِفِينَ

And We did not sent before you (O Muḥammad) except men to whom We revealed (scripture), so ask the people of the (prior) remembrance if you do not know. And We did not create them (the Messengers, with) bodies that ate not food, nor were they immortals; then We fulfilled to them the promise, and We saved them and those whom We willed, but We destroyed Al-Musrifun (i.e. extravagants in oppression, polytheism and in sin). [Surah Al-Anbiyaa. Ayaat 7-9]

Allah [The Exalted] said:
ذَلِكَ جَزَيْنَاهُمْ بِبَغْيِهِمْ وَإِنَّا لَصَادِقُونَ

Thus We recompensed them for their rebellion (committing crimes like murdering the Prophets, consuming Riba- usury, etc.). And verily, We are Truthful]. [Surah Al-An’aam. Ayah 146]

With this great description, Allah described Himself as truthful in His statements, actions, promises, and warnings- truthful in the news about His prophets, faithful believers, and His foes. He described His Prophets as truthful, aided them with miracles and magnificent signs that proved their complete truthfulness, and refuted their enemies’ fabrications and denials. One of the greatest things He aided them with was the destruction of their enemies with a flood, some of them by a fierce violent wind, some were seized by the blast (from the sky) and swallowed by the earth, and some were drowned, while He saved the Prophets and their followers. All of this is from the Lord of the entire existence, a testimony to the truthfulness of His Prophets and that they are truly His Messengers, and humiliation against His enemies and their enemies.

And among those mentioned in the Qur’an with this description were Ibraaheem, Ismaa’eel, and Idrees [peace and blessings be upon them]. Allah [The Exalted] said:

وَاذْكُرْ فِي الْكِتَابِ إِبْرَاهِيمَ إِنَّهُ كَانَ صِدِّيقًا نَبِيًّا

And mention in the Book (the Quran) Ibrahim (Abraham). Verily! He was a man of truth, a Prophet]. [Surah Maryam. Aayah 41]

Allah [The Exalted] said:
وَاذْكُرْ فِي الْكِتَابِ إِسْمَاعِيلَ إِنَّهُ كَانَ صَادِقَ الْوَعْدِ وَكَانَ رَسُولاً نَبِيًّا

And mention in the Book (the Quran) Isma’il (Ishmael). Verily! He was true to what he promised, and he was a Messenger, (and) a Prophet]. [Surah Maryam. Ayah 54]

Allah [The Exalted] said:
وَاذْكُرْ فِي الْكِتَابِ إِدْرِيسَ إِنَّهُ كَانَ صِدِّيقًا نَبِيًّا

And mention in the Book (the Quran) Idris (Enoch). Verily! He was a man of truth, (and) a Prophet]. [Surah Maryam. Aayah 56]

The description of truthfulness given to them is a declaration of their ability to possess this quality, as well as the fact that their statements, deeds, promises, and covenants are founded on truthfulness.

And every Ayah in the Noble Qur’an – a miracle with which the jinn and humankind are challenged to bring a Surah like it, but they are unable to do so – is the greatest proof of His [i.e. the Messenger Muhammad] truthfulness and that he is indeed Allah’s Messenger and Seal of the Prophets. No one has ever claimed prophethood after him, except that Allah exposed, disgraced, and revealed his defects and lies; rather, no one lied about him in a statement attributed to his message, except that Allah exposed and disgraced him through the explanation of the truthful followers of his message among the scholars of hadeeth and others. (Allah) The Exalted stated whilst praising him for what he conveyed of truth and truthfulness:

بَلْ جَاءَ بِالْحَقِّ وَصَدَّقَ الْمُرْسَلِينَ

Nay! he (Muhammad) has come with the truth (i.e. Allah’s Religion – Islamic Monotheism and this Quran) and he confirms the Messengers (before him who brought Allah’s religion – Islamic Monotheism)]. [Surah As-Saffaat. Ayah 37]

This is the greatest status given to Allah’s slave and Messenger Muhammad [peace and blessings of Allah be upon him]. [An Excerpt from https://www.mimham.net/tan-1308-82 slightly paraphrased]

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Footnote a: They took the Ahbaar and Ruhbaan (the scholars and worshippers) as Lords besides Allah: https://abukhadeejah.com/ahmad-an-najmees-kitaab-at-tawheed-chapter-5-the-explanation-of-tawheed-and-the-shahaadah-laa-ilaaha-illallaah/