The Quran

فَاعلَم أَنَّهُ لا إِلٰهَ إِلَّا اللَّهُ وَاستَغفِر لِذَنبِكَ وَلِلمُؤمِنينَ وَالمُؤمِناتِ ۗ وَاللَّهُ يَعلَمُ مُتَقَلَّبَكُم وَمَثواكُم

Ali Unal

Then, know (bear in mind) that there is no deity but God, and ask forgiveness for your lapses,¹ and for the believing men and believing women. God knows from which (inner) state and (social) condition, to which state and condition you do and will move, and in which state and condition you will be steady.

For the sinlessness of the Prophets and the Messenger’s asking forgiveness for his “faults,” see 48: 2, and the corresponding note 2.