From Sahih Muslim (Hadith 6584):
Jabir b. 'Abdullah reported that a person from the emigrants struck the back of an Ansari. He came to Allah's Apostle (ﷺ) and asked for compensation. Thereupon Allah's Apostle (ﷺ) said:Leave it. for it is something disgusting. Ibn Mansur said that in the narration transmitted on the authority of Amr (these words are also found):" I heard Jabir
Reference: Muslim 6584