In The Name of Allaah, The Most Merciful, The Bestower of Mercy.
Allaah [The Exalted] said:
وَإِذۡ أَخَذۡنَا مِنَ ٱلنَّبِيِّـۧنَ مِيثَـٰقَهُمۡ وَمِنكَ وَمِن نُّوحٍ۬ وَإِبۡرَٲهِيمَ وَمُوسَىٰ وَعِيسَى ٱبۡنِ مَرۡيَمَۖ وَأَخَذۡنَا مِنۡهُم مِّيثَـٰقًا غَلِيظً۬ا
لِّيَسۡـَٔلَ ٱلصَّـٰدِقِينَ عَن صِدۡقِهِمۡۚ وَأَعَدَّ لِلۡكَـٰفِرِينَ عَذَابًا أَلِيمً۬ا
And (remember) when We took from the Prophets their covenant, and from you (O Muhammad ), and from Nuh (Noah), Ibrahim (Abraham), Musa (Moses), and ‘Iesa (Jesus), son of Maryam (Mary). We took from them a strong covenant. That He may ask the truthful [i.e. His Messengers and Prophets] about their truth [i.e. the conveyance of Allaah’s Message that which they were charged with].
[Surah Al-Ahzaab. Aayaat 7-8]
Imaam Ibnul Qayyim [rahimahullaah] said: When it is the case that the truthful ones will be brought to account regarding their truthfulness, then what would one think about the liars? [Ref1]
Ibn Aqeel [rahimahullaah] said:
“If the truthful ones were to keep silent and the falsifiers speak, then the creation would have relinquished what they have witnessed [of truth] and reject what they have not witnessed. So when the devout ones desire to revive the Sunnah, the people would reject it and think that it is bidah”. [Ref 2]
Al-Allaama Rabee Bin Haadee Al-Madkhalee [may Allaah preserve him] said:
Through [Muhammad (sallal-laahu-alayhi-wasalam)], Allaah removed us from the darkness of Shirk, indecency and Bidah, evil deeds and bad manners – lying, deceit, quackery, trickery etc. And He (purified us) with pure (Islamic)] monotheism and strong sincere Eemaan. He [sallal-laahu-alayhi-wasallam] nurtured us upon truthfulness and took the oath of allegiance from us that we speak the truth wherever we may be, and He warned us against lies and evil deeds. And from the recompense (given) to a liar is that which has been reported from the noble Prophet [sallal-laahu-alayhi-wasallam]- the person of high moral character- who said, “I saw (in a dream) – two men came to me”. Then the Prophet [sallal-laahu-alayhi-wasalam] said, “They said, ‘the person- the one whose cheek you saw being torn away (from the mouth to the ear) was a liar and used to tell lies and the people would report those lies on his authority till they spread (that lie) all over the world. So, he will be punished like that till the Day of Resurrection”. [Reported by Imaam Al-Bukhaari: Number: 6096]
How numerous are those who tell lies today against the carries of Salafiyyah and its callers! They hinder men from the path of Allaah by way of these lies to aid falsehood, spurious (stances, ideas, views etc), bidah, (views, stances, beliefs, ideas etc) that are destructive to the sound creed, methodology and virtuous manners. [Ref 3]
[Ref 1: Ighaatha Al-Lahfaan 1/83]
[Ref 2: Shifaa As-Sudoor Fee Ziyaaratil Mashaahid Wal-Quboor page: 148]
[Ref 3: An Excerpt from ‘Al-Awaasim Mimmaa Fee Kutub Sayyid Qutb Minal-Qawaasim: page 4-5. slightly paraphrased]