Ghafir[1] (Arabic: غافر, ghāfir; meaning: "The All-Forgiving", referring to God), also known as Al-Muʼmin (Arabic: المؤمن, ’al-mu’min; meaning: The Believer),[2] is the 40th chapter (sūrah) of the Qur'an, with 85 verses (āyāt).

However, this surah is most often called al-Ghafir (the All-Forgiving) because of the Divine Name mentioned in verse 3.

And ask forgiveness for your sin and exalt [ Allah ] with praise of your Lord in the evening and the morning.

[6]Infallibility is an indispensable attribute of Islamic Prophet-hood according to Muslims.

So according to Muslims, all the Islamic prophets are infallible in the sense that they do not sin or disobey God's orders.