API
An-Nawawy’s Forty Hadiths: (21) Concept of Istiqamah
On the authority of Abu `Amr - also called Abu `Amrah - Sufyan ibn Abdullah ath- Thaqafee (may Allah be pleased with him) that he said, "I said, 'O Messenger of Allah, tell me something about 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.'" (Muslim)
