الكافي 1/4/111/29

29. Al-Husayn ibn Muhammad and Muhammad ibn Yahya have narrated from Ahmad ibn Ishaq from Bakr ibn Muhammad al-Azdi from Ishaq ibn Ja‘far from his father عليه السلام who said: “It was said to him (the Imam): 'people claim that Abu Talib was an unbeliever.' He عليه السلام said: 'They lied, how could he be an unbeliever when he would say: “Do they not know that we found Muhammad as a prophet like Musa whose name is written in the ancient books.”? According to another hadith he said, “How could Abu Talib be an unbeliever when he would say, “They certainly know that our child is not a liar to us and the false words are not paid any attention to. The (beautiful) white face (of Muhammad) that prays for rain from the clouds, is the helper of the orphans and the protector of the widows.’”