Sayyiduna Jabir (may Allah be pleased with him) says that Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) fell ill, so the Prophet (peace and blessings be upon him) sent a physician to him, and he cauterized his vein.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19549