Musannaf Ibn Abi Shayba 27:505

Muttalib ibn Ziyad narrated to us, from Jabir, who said: We were with Abu Ja'far in the mosque, and a young boy was looking at Abu Ja'far and crying. Abu Ja'far said to him, "What makes you cry?" He said, "Out of love for you." He said, "You have looked where Allah looked, and you have chosen from the best of what Allah chose."