In The Name of Allaah, The Most Merciful, The Bestower of Mercy

The Messenger of Allaah (sallalaahu-alayhi-wasallam) said: ”When the son of Adam wakes up in the morning, all the limbs humble themselves before the tongue and say: ”Fear Allaah for our sake, (for) we are with you; if you are upright, we will be upright; and if you are crooked, we will become crooked.” [1]

The Messenger (sallal-laahu-alayhi-wasallam) also said: ”Whoever can guarantee (the chastity of) what is between his two jaw bones and what is between his two legs (i.e. his mouth, his tongue and his private parts), I guarantee Paradise for him.” [2]

Imaam Abdul-Azeez Bin Baaz (rahimahullaah) said: This requires two affairs; [a] A lot of remembrance (of Allaah); [b] keeping away from gatherings of heedlessness and doubts, and (keeping away from) that which will result in fornication and nonsense speech. [3]

Al-Hasan Bin Saaleh (rahimahullaah) said:

”I scrutinized Wara (apprehensive fear) thoroughly and did it find it more lacking in anything than the tongue.” [4]

Imaam Fudayl Ibn Iyaad (rahimahullaah) said:

”Neither hajj nor taking up positions during battle, nor Jihaad are more difficult than restraining the tongue.” [5]

Imaam Ibn Qudaamah Al-Maqdisee (rahimahullaah) said:

Know that whoever is acquainted with the worth of his era and that it is his main capital, he will not seek an understanding except in what is beneficial. This acquaintance obligates restraining one’s tongue from speaking about that which does not concern him, for indeed the one who abandons the remembrance of Allaah (The Most High) and busies himself with what does not concern him, then he is like one who is able to get hold of a gem but exchanges it for a clod of earth.  This is a loss of one’s lifespan. [6]

References:

[1] [Reported by Tirmidhee Number 2407: Chapter: What has been reported concerning preservation of the tongue] [Hadeeth Delared Hasan By Imaam Albaani]

[2] [Saheeh al-bukhaari, Book of Ar-Riqaaq, Vol 8, page: 263. Hadeeth Number: 6474]
[3] Al-Hulalul Ibreeziyyah Min At-Taliqaat Al-Baaziyyah Alaa Saheeh al-Bukhari. Vol 4. Page:244. Footnote:2]

[4]Siyar: 7/368] NB: The translation of the word Al-Wara as apprehensive fear was taken from one of Ustaadh Amjad’s Rafiq’s (may Allaah preserve him) translations

[5]Jaami-ul Uloom Wal-Hikam:page:145]

[6] Mukhtasar Minhaaj Al-Qaasideen’ page 176]