About fifteen of the leading men of the Quraish tribe came to the Prophet in the same way and became ennobled by Islam. We may mention Usman ibn Affan, Abd ar Ralman ibn Auf, Sad ibn Abi Waqqs, Zubayr ibn al-Auwam, Talha Ubaydullah, Ubayda ibn Harith, Jafar ibn Abdul Muttalib, and many others. At the same time as these conversions, so important by reason of the proselytes ranking highly, we must not forget one more humble, but most touching: that of Mohammad's nurse. As soon as the call of her foster-son came to her ears, good Halimah, who had always believed that the boy she had reared would make his mark in life, hastened with Haris, her husband, to be counted among the Faithful. Every person, too, belonging to Mohammad's household, had become a convert from the onset, and among them, his daughters, still very young; without forgetting a negress, Umm al Ayman. This little group of Believers now led a life filled with ever-changing emotion. What could be more charming than their secret meetings when they prayed and adored Allah in perfect union? But they had to take unheard-of precautions so as not to awaken the hostile suspicions of idolaters. Even in his own house, the Prophet was forced to beware of his neighbours, and when he proclaimed the "Takbir," he spoke into a pitcher buried in the ground, so as to deaden the sound of his voice. In these circumstances, only clandestine propaganda was possible, and during the first three years, the progress of Islam was excessively slow and timid. On the other hand, Revelation had suddenly stopped; and Mohammad, no longer feeling himself upheld by the inspiration of the Almighty, began to doubt and despair. He was wandering to and fro, anxious and alone, in a wild valley, when he heard a celestial voice causing him to look up. In the vivid brightness of great light, he recognised the Angel that had appeared to him at Hira. He could not support the brilliancy of this formidable apparition and, blinded, rushed to his dwelling where he had himself wrapped up in his mantle, so as to calm the tremor of his frame and shade his dazzled eyes. It was then that Allah sent down the following verses: "_O thou enwrapped in thy mantle! * Arise and warn! * Warn thy relatives of nearer kin * And lower Thy wing over the Faithful who follow Thee. * And if they disobey thee, then say: 'I verily am clear of your doings' * And put thy trust in the Mighty, the Merciful_." (THE QUR'AN, LXXIV, 1, 2. XXVI, 214-220).