Many Hadiths, supported by the majority of scholars, confirm that a man’s `Awrah in Islam is the area from the navel to the knee.

Prophet Muhammad’s practice with regard to clothing was to wear whatever was easily available;  wool, cotton, or linen. He wore a Yemeni Burd (cloak) and a green one; he wore a Jubbah, Qaba’ (over-gament), Qamis (chemise or thobe/Galabiyah), trousers, Izar, Rida’, Khuff (leather socks), and sandals. He let the end of his turban hang down from behind sometimes, and at other times he did not, and sometimes he brought part of the turban under his chin.

The scholars unanimously agreed that it is not permissible to pray with one's sleeves or garment rolled up and the like, or with one's hair braided or with one's hair wrapped up beneath the turban and so on. It is disliked in the sense of being discouraged and not proper. If a person prays like that, he has done something wrong but his prayer is valid.