For this treaty's provisions in extenso, see the author's second Arabic edition of this book, al-Risalah aI-Khdlidah (2d ed.; Cairo: The House of Arabic Books, 1954), pp. 92-97. Also, see the excellent work by Dr. Muhammad Hamidullah (professor of International Law at the University of Othmania, Hyderabad, India), Corpus des Traite's et Lettres diplomatiques d'Islam a l'Epoque du Prophete et des Khaliles ortliodoxes (Paris: G.-P. Maisonneuve, 1935).