Amr bin al-Sharid narrates from his father (may Allah be pleased with him) that in the delegation of Thaqif there was a man with leprosy, so the Messenger of Allah (peace and blessings be upon him) sent word to him: "Go back, we have accepted your pledge of allegiance."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 14244