55فَاصبِر إِنَّ وَعدَ اللَّهِ حَقٌّ وَاستَغفِر لِذَنبِكَ وَسَبِّح بِحَمدِ رَبِّكَ بِالعَشِيِّ وَالإِبكارِ(Saheeh International)So be patient, [O Muḥammad]. Indeed, the promise of Allāh is truth. And ask forgiveness for your sin1 and exalt [Allāh] with praise of your Lord in the evening and the morning. What is intended is "fault" or "error" in judgement, since all prophets were protected by Allāh from falling into sin. The implication is that all believers should seek forgiveness for their sins.