The Messenger of Allah (ﷺ) used to setup a pulpit in the mosque for Hassan who would stand on it and satirise those who spoke against the Messenger of Allah (ﷺ). The Messenger of Allah (ﷺ) would say: The spirit of holiness (i.e. Gabriel) is with Hassan so long as he speaks in defence of the Messenger of Allah (ﷺ).
Sunan Abi Dawud Book 43, Hadith 243
← Previous Hadith so he (‘Umar’) feared that he would refer to the Messenger of Allah (May peace be upon him); therefore he allowed him.

Sunan Abi Dawud Book 43, Hadith 242 Next Hadith → The verse “And the poets it is those straying in evil who follow them. He (Allah) then abrogated it and made an exception saying: Except those who believe and work righteousness, engage much in the remembrance of Allah."

Sunan Abi Dawud Book 43, Hadith 244