The ruling on poetry is the same as the ruling on speech or words, of which it is a part; therefore, what is good is good, and what is bad is bad.One of the prominent poets among the Companions was Hassaan ibn Thaabit (may Allah be pleased with him). In this hadeeth, the Taabi’ee Sa’eed ibn al-Musayyab reports that one day ‘Umar ibn al-Khattaab (may Allah be pleased with him)found Hassaan ibn Thaabit recitingpoetry in the Mosque. The facial gesture of ‘Umar showed his disapproval, but Hassaan informed him that he used to recite poetry in the Mosque in the presence of him who is better than ‘Umar, meaning the Prophet ﷺ. Then, he (may Allah be pleased with him) looked at Aboo Hurayrah (may Allah be pleased with him) and said to him, “I ask you by Allah, did you hear Allah's Messengerﷺ saying to me, ‘Retort on my behalf. O, Allah! Support Hassaan with the Holy Spirit?’”Aboo Hurayrah (may Allah be pleased with him) confirmed it. The reason Hassaan did that wasthat ‘Umar was known for his strictness about the hadeeths of the Prophet ﷺ, and he would only accept it if two men testified to the correctness of the hadeeth. The background story of the statement of the Prophet ﷺ to Hassaan ibn Thaabit is that some poets from Quraysh lampooned the Prophet ﷺ. Hence, he ﷺ asked his Companions to respond to them and lampoon Quraysh. A couple of Companions stepped forward to take this mission, and Hassaan ibn Thaabit was one of them. However, the poetry of Hassaan was the most effective and most intimidating to Quraysh. Thereupon, the Prophet ﷺ asked Allah to support Hassaan with the holy spirit (i.e. angel Gabriel). It has been said that the Prophet ﷺ made this supplication so Allah would protect him through the angel Gabriel from falling into scurrility, as it would backlash, causing more damage. The hadeeth highlights the virtue of Hassaan ibn Thaabit (may Allah be pleased with him), and shows that it is permissible to recite poetry in the Mosque to defend the truth and encourage the good..