It is narrated from abu Ja‘far (a.s.) who has said the following. "O the community of of our followers, debate the opposition by means of chapter
ninety seven of th Holy Quran. We have revealed on the Night of Determination, you will gain victory. I swear by Allah, the Most Holy, the Most High, that this is the authoritative evidence from Allah, the Most Holy, the Most High, against the creatures after the Messenger of Allah. This is the lead evidence in your religion. It certainly, is the goal of our knowledge. (Al Kafi, H 648, Ch. 41, h 6, english translation).
Abu Ja‘far (a.s.) then said the following. "The excellence of the faith of a believer because of his accepting, "We have revealed it in the Night of Determination," and its interpretation, over those who are not like him in the matters of faith in that Night is like the excellence of man over the animals.(Al KafiH 649, Ch. 41, h 7)