In The Name of Allaah, The Most Merciful, The Bestower of Mercy.
Shaikh Abdur Razzaaq Al-Badr [hafidhahullaah] quotes from Imaam Ibnul Qayyim [rahimahullaah] who stated: Disobedience [can] appear agreeable to a human being, such as Gheebah [backbiting (Ref 1)], Nameemah [tale carrying], [blameworthy] argumentation, self-praise – whether uttered blatantly or indirectly, verbally abusing the one you hate, praising the one you love and what is similar to that. The intense urge [i.e. the urge to engage in these deeds] agrees with [the soul’s desire], then it becomes easy for the tongue to move [i.e. speak] and thus one’s patience weakens; so due to this the Messenger [sallal laahu-alayhi wasallam] said to Mu’aadh [radiyallaahu-anhu], “Restrain your tongue”, so Mu’aad said, “O Messenger of Allaah! Will we be held accountable for what we say?” He [sallal laahu alayhi wasallam] said, “May your mother be bereaved of you, O Mu’aadh! Is there anything that topples people on their faces – or he said on their noses into the fire- other than the harvest of their tongues?!” [Ref 2]
[This urge occurs], especially when sinning through the tongue is habitual because it entices a person towards impatience [i.e. he does not exercise patience in order to restrain his tongue]. This is why you find that a man performs the night prayer [i.e. Tahajjud, Qiyaamul Layl] and fasts during the day; as well as refrain from reclining on a pillow made of silk -out of fearing that he might enter into a doubtful affair that will affect him in the afterlife- but he backbites, spread tales and violates the honour of the people. [Quoted by Shaikh Abdur Razzaaq Al-Badr (hafidhahullaah) in Sharh Ar-Risaalah Al-Mughniyah Fis Sukoot Wa Luzoomil Buyoot. Lesson 1]
Ref 2: Regarding the statement: ‘’May your mother be bereaved of you, O Mu’aadh!’’ The Arabs used this statement for the purpose of persuasion and exhortation, and they did not intend its apparent meaning, which is ‘’May his mother lose him’’; rather what is intended is persuasion and exhortation. [See ‘Sharh Al-Arba’een An-Nawawiyyah’ by Shaikh Uthaymeen (rahimahullaah). Hadeeth Number 29, page 295. 1st Edition 2003 (1424 AH). Publisher: Daarul Thurayyah]