قُلْ: آمَنْتُ بِاللَّهِ، ثُمَّ اسْتَقِمْ
Transliteration
Qul: amantu billahi, thumma-staqim.
Translation
Say: "I believe in Allah", then be steadfast.
Narrated by Sufyan ibn 'Abdullah·Sahih Muslim 38 (an-Nawawi's wording in the Forty; Muslim's own text reads fa-staqim)·Nawawi's Forty · #21
