Here is the video that I will be responding to - https://www.youtube.com/watch?v=GGD_RxwGoZ8&t=11s
In the video, the individual brings two verses to refute infallibility. The first verse is surah fatir, verse 32. It reads:
"Then We granted the Book to those We have chosen from Our servants. Some of them wrong themselves, some follow a middle course, and some are foremost in good deeds by Allah’s Will. That is ˹truly˺ the greatest bounty." (35:32)
He argues that we claim that our imams are the inheritors of the book, and in the verse it says that the some of the inheritors of the book wrong themselves. Therefore, the concept of infallibility is refuted. The answer comes from Al Kafi:
Al-Husayn ibn Muhammad has narrated from Mu'alla ibn Muhammad from Muhammad ibn Jumhur from Hammad ibn 'Isa from 'Abd al-Mu'min from Salim who has said that he asked abu Ja'far (a.s.) about the meaning of the words of Allah, the Most Holy, the Most High. "We gave the Book as an inheritance to Our chosen servants, among whom some are unjust against their souls, some are moderate, and some are exceedingly virtuous by the permission of God. . . ." (35:31) The exceedingly virtuous is the Imam (a.s.), the moderate ones are those who know the Imams (a.s.) and the unjust ones are those who do not know the Imams (a.s.)." (Kitab al-Hujjah, Ch.24, H.1)
The next argument he bring is that in surah fatiha we ask Allah to guide us to the path of those whom he has bestowed favour. He says that this group has been mentioned in the Qur'an. The verse he brings is from surah Nisa, verse 69. It reads:
"And whoever obeys Allah and the Messenger - those will be with the ones upon whom Allah has bestowed favour of the prophets, the steadfast affirmers of truth, the martyrs and the righteous. And excellent are those as companions." (4:69)
He argues that in this verse, only the prophets are infallible, and the others (affirmers of truth, martyrs and righteous) are not. A question arises, who said that the other groups were not infallible? Does the verse say the affirmer of truth commits sin? Again, here is a hadith from the Imam:
From him, from Ahmad Bin Muhammad, from Ali Bin Al Hakam, from Sayf Bin Ameyra, from Abu Al Sabbah Al Kinany, (It has been narrated) from Abu Ja’far having said: ‘Assist us with the devoutness, for the one of you whom meets Allah Mighty and Majestic with the devoutness, there would be for him, in the Presence of Allah, a relief; and that Allah Mighty and Majestic is Saying [4:69] And whoever obeys Allah and the Rasool, these are with those upon whom Allah has Bestowed Favours from among the Prophets and the Truthful and the Martyrs and the Righteous, and a goodly company are they! Thus, from us is the Prophet, and from us is the truthful, and the martyrs and the righteous ones * (Al Kafi, Kitab al-eman wa al-kufr, Ch.37, H.12) Grading of Hadith- Sahih (Mira'at ul Uqool, Vol.8, Pg.23)
If anyone has something else to add, please share.