It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that Sayyiduna Abbas (may Allah be pleased with him) used to brand on the face. When the Prophet (peace and blessings be upon him) forbade branding on the face, Sayyiduna Abbas (may Allah be pleased with him) said: "I will not brand except at the lowest place, away from the face." Then he branded on the haunches.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الصدقات / 13262