The revelations came to Moḥammad in many ways and at all times, but never ‘in visions bright, transcendant, exalted. They came ghastly, weird, most horrible. After long solitary broodings, a something used to move Moḥammad, all of a sudden, with frightful vehemence. He “roared like a camel,” his eyes rolled and glowed like red coals, and on the coldest day terrible perspirations would break out all over his body. When the terror ceased, it seemed to him as if he had heard bells ringing, “the sound whereof seemed to rend him to pieces”—as if he had heard the voice of a man—as if he had seen Gabriel—or as if words _had been written in his heart_. Such was the agony he endured, that some of the verses revealed to him well-nigh made his hair turn white.’ No collection of these revelations was made during Moḥammad’s lifetime; at his death, the Ḳur-án existed only as scattered chaotically among the believers. But about a year later, the death in battle of some of the men who had specially committed passages of the Ḳur-án to memory, and the dread that the whole of Moḥammad’s teaching might vanish at the end of a generation or two, induced Aboo-Bekr to make the innovation from which every one shrank, and he gave orders to the Prophet’s secretary, Zeyd ibn Thábit, to collect the fragments of the Ḳur-án in one book. So Zeyd gathered the Ḳur-án from palm-leaves, skins, shoulder-blades, stones, and the hearts of men, arranged the chapters in a certain order, and presented Aboo-Bekr with a Ḳur-án which probably differed in no essential particular from the book we have now. All scholars are agreed that Zeyd did his work faithfully, and neither inserted nor omitted anything from party motives. But he seems to have occasionally mixed up fragments of very different date in one chapter—Moḥammad himself countenanced this—and may possibly have omitted some portions that were not found till afterwards.