The Messenger of Allah ﷺ used to set up a pulpit in the mosque for Hassan, upon which he would stand and satirize those who had spoken against the Messenger of Allah ﷺ. The Messenger of Allah ﷺ said, "The Holy Spirit is with Hassan as long as he defends the Messenger of Allah ﷺ."
حدثنا محمد بن سليمان المصيصي لوين حدثنا ابن أبي الزناد عن أبيه عن عروة وهشام عن عروة
كان رسول الله ﷺ يضع لحسان منبرا في المسجد فيقوم عليه يهجو من قال في رسول الله ﷺ فقال رسول الله ﷺ إن روح القدس مع حسان ما نافح عن رسول الله ﷺ
[Its chain of transmission is hasan] Tirmidhi reported it, in the Book of Manners, chapter on what has been said about reciting poetry, no. 2846, from the hadith of Abdul-Rahman bin Abu Zinad, through this route, and he said, hasan gharib sahih.