Musannaf Ibn Abi Shaybah 21119 — Those who permitted branding

Muhammad bin Ziyad said: Sayyiduna Ibn Umar (may Allah be pleased with them both) passed by my father while he was branding animals with the brand of Sayyiduna Qudamah bin Maz'un (may Allah be pleased with him). Sayyiduna Ibn Umar (may Allah be pleased with them both) said: "Do not brand so hard that it reaches the flesh; do not brand so hard that it reaches the flesh."