The Forty Hadith of Imam Nawawi Say: I believe in Allah, then be steadfast Abu Amr Sufyan ibn Abdullah ath-Thaqafee Sahih I said, “O Messenger of Allah, tell me something about al-Islam which I can ask of no one but you.” He (peace and blessings of Allah be upon him) said, “Say I believe in Allah — and then be steadfast.” https://parallelquran.com/hadith/forty-nawawi-21/