Qahtani, Sa'id ibn 'Ali ibn Wahf. The purity of the Muslim in the light of the Qur'an and Sunnah : concept, virtues, standards of behaviour and rulings/ Sa'eed 'Ali Wahf al-Qahtani. - Second Edition - Riyadh : International Islamic Publishing House, 2006. - 150 p. ; 22 cm. ISBN: 9960964817(pbk.) Subjects--Topical Terms: Purity, Ritual (Islam)Ablutions (Islam) LC Class. No.: BP184.4