question #3 Sahih Muslim 692b, Book 6, Hadith 16 : Why might certain names be omitted in the transmission of a hadith, and what impact does this have on its authenticity?

This hadith has been transmitted by Shu’ba with the same chain of narrators and it is narrated from Simt, and the name of Shurahbil has not been mentioned, and he said that he had gone to a place called Dumin, situated at a distance of eighteen miles from Hims.