Ghafir


Ghāfir, also known as Sūrat al-Muʼmin, is the 40th chapter of the Qur'an with 85 verses. It takes its name from verse 28 which mentions a distinguished believer from among the clan of the Pharaoh who supported Moses, referring to him as a "believing man," hence al-Mu'min; The Believer. However, this surah is most often called al-Ghafir because of the Divine Name mentioned in verse 3.
Regarding the timing and contextual background of the revelation, it is a "Meccan surah", which means it is believed to have been revealed in Mecca, instead of later in Medina.

Exegesis ([Tafsir])

Q40:55

Translation: So be patient, . Indeed, the promise of Allah is truth. And ask forgiveness for your sin and exalt with praise of your Lord in the evening and the morning.
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. Here, God reminds the believers of an important fact to which Muslims must be attentive on the way to God.