The Messenger of Allah ﷺ said to Hassan bin Thabit, "Compose satirical verses against the polytheists, for Jibreel is with you."
حدثنا أبو معاوية حدثنا الشيباني عن عدي بن ثابت
قال رسول الله ﷺ لحسان بن ثابت اهج المشركين فإن جبريل معك
Its isnad is sahih. It was previously mentioned at 18090.