(254) Chapter: The Prohibition of Backbiting and the Commandment of Guarding one's Tongue

Sufyan bin 'Abdullah (May Allah be pleased with him) reported:
I asked: "O Messenger of Allah! Tell me, of something to which I may remain steadfast." He (ﷺ) said, "Say: My Rubb is Allah and then remain steadfast." Then I said: "O Messenger of Allah! What do you fear most about me?" He took hold of his own tongue and said: "This."

[At-Tirmidhi].

Commentary: Faith in Allah and all His Attributes is the basis of all virtuous deeds. No act or deed is acceptable by Allah without this faith, "and then remain steadfast'' means to comply with what Allah has ordained and to keep away from what He has forbidden so that one can win over His Pleasure. Every Muslim is required to guard his speech strictly because even the slightest carelessness on this account can cause Allah's displeasure.