Jabir reported that Allah's Messenger (ﷺ) sent a phystian to Ubayy b. Ka'b. He cut the vein and then cauterised it

A'mash reported this with the same chain of transmitters and he made no mention of the fact that he cut one of his veins

Jabir b. 'Abdillah reported that on the day of Ahzab Ubayy received the wound of an arrow in his medial arm vein. Allah's Messenger (ﷺ) cauterised it