Saeed bin Musayyib narrated that Umar bin Khattab (may Allah be pleased with him) came to the mosque and Hassan (may Allah be pleased with him) was reciting poetry there. Umar (may Allah be pleased with him) expressed his dislike for reciting poetry in the mosque, so Hassan (may Allah be pleased with him) said, "I used to recite poetry here at a time when someone better than you (the Prophet, peace be upon him) was present here." Then Hassan (may Allah be pleased with him) turned towards Abu Hurairah (may Allah be pleased with him) and said, "I ask you by Allah, did you not hear the Messenger of Allah (peace be upon him) say: 'O Hassan! Reply on my behalf (to the disbelievers of Makkah). O Allah! Help Hassan with the Holy Spirit.'" Abu Hurairah (may Allah be pleased with him) said, "Yes, indeed (I heard it)."