The infallibility of the Prophets and Messengers:

1⃣. The Prophets & Messengers (peace be upon them) are infallible when it comes to receiving and conveying the revelation. Sheikh ibn Baz rahimahullah said: “The Muslims are unanimously agreed that the Prophets (peace be upon them) – especially Muhammad ﷺ – are infallible and protected from error in that which they conveyed from Allah.” [Fataawa Ibn Baz (6/371)] Similarly, Sheikh Fawzan hafidahullah said: “The consensus of the scholars is that the Messengers are infallible with regards to what they have relayed to us from Allāh, and in their complete delivery of their respective messages. This is because it is only by this infallibility that the mission of the message and prophethood is fulfilled.” [Al-Irshaad ilaa Ṣaḥeeh Al-’tiqaad, 182] 2⃣. They are also infallible with regards to major sins: Sheikhul Islam Ibn Taymiyah rahimahullah said: “The view that the Prophets are infallible and protected against committing major sins, as opposed to minor sins, is the view of the majority of Muslim scholars and of all groups. It is also the view of the scholars of tafseer, hadeeth and fiqh. Indeed, nothing has been narrated from any of the salaf, imams, Sahaabah, Taabi’een and those who followed them except that which is in accordance with this view. [Majmoo’ al-Fataawa (4/319)] 3⃣. As for minor sins, then there is a difference of opinion amongst the scholars: Shaykhul Islam Ibn Taymiyah rahimahullah said: “What has been narrated from the majority of scholars is that they are NOT INFALLIBLE WITH REGARD TO MINOR SINS, but they are not left to persist upon that. They do not say that this does not happen under any circumstances. The first group from whom it was narrated that they are infallible in all cases, and who say that the most, are the Raafidha (Shi’ah), who say that they are infallible and protected even against forgetfulness and misunderstanding.” [Majmoo’ al-Fataawa, 4/320] Likewise, the Standing Committee was asked: “Do the Prophets and Messengers make mistakes?” They replied: “Yes, they make mistakes but Allah does not let them persist in their mistakes, rather he points out their mistakes to them as a mercy to them and their nations, and He forgives them for their mistakes, and accepts their repentance by His Grace and Mercy, for Allah is Oft-Forgiving, Most Merciful, as will be clear to anyone who studies the verses of the Qur’aan which speak of that.” [Fataawa al-Lajnah al-Daa’imah (3/194)]