Abdur Rahman bin Abi al-Zanad عبد الرحمن بن أبي الزناد · General Behavior (Kitab Al-Adab)

Umar passed by Hassan when he was reciting verses in the mosque. He looked at him. Thereupon he said: I used to recite verses when there was present in it the one who was better than you (i.e. the Prophet).