Mukhtasar Muslim

Narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) was carrying stones with the people for the construction of the Ka'bah, and he (peace be upon him) was wearing an izar (waist cloth). Sayyiduna Abbas (may Allah be pleased with him), who was his (peace be upon him) uncle, said, "O my nephew! If you take off your izar and put it on your shoulder, it will be better." He (peace be upon him) took off his izar and put it on his shoulder, and immediately he fainted and fell down. After that day, he (peace be upon him) was never seen naked.