Sayyiduna Jabir (may Allah be pleased with him) says that the Prophet (peace and blessings be upon him) sent a physician to Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him); he cut one of his veins and then cauterized it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19548