His interlocutor never left off until he had coaxed Kab into cancelling his contract with Mohammad and forming an alliance with the Infidels.

The rumour of this defection coming to the Prophet's ears, he sent Sad ibn Muaz, Sad ibn Ubaidah and Chuat ibn Zubayr to see if it was true. When these envoys reminded the Banu Quraizah of their pledge, the following reply was made: 'Who is this Prophet of Allah of whom ye speak? There exists no treaty between him and us.'

This was downright treachery, for the Banu Quraizah were marvellously well-informed as to the Believers' secrets and weak points of the town. To guard against the anxiety that such treason might create among his disciples, Mohammad, when his envoys returned, exclaimed: 'Allah is Great! Here have we good news! Hearken, O Moslem comrades!' In this way he predicted that the spoils accruing from the overthrow of the Banu Quraizah would soon enrich the Believers, thus brazenly betrayed.

The sight of the ten thousand sparkling spears that made the plain look like a field of darts, produced, nevertheless, a great impression on the Believers lining the ramparts. The "Hypocrites," as was their wont, instead of exhorting the citizens to pluck up courage, tried to sow the seeds of panic. 'Admire Mohammad,' they would say. 'He promised us the treasures of Chosroes and of Cæsar; and yet, this very day, he himself is not certain of having a roof over his head!'

To put an end to these gloomy forebodings, the Prophet made his troops sally forth and posted them behind the ditch. They were covered in the rear by the Sala hill. At that juncture, some of the soldiers whose courage was on the wane asked the permission of the Prophet to return, saying: 'Of a truth, our houses are left defenceless.' "But they were not left defenceless: verily their sole wish was to flee away * If the enemy had effected an entry at all points, and they had been asked to promote rebellion among the Believers, they would certainly have done so; but only a short time would they have remained in." (The Qur'an, xxxiii, 13, 14.)

Frankly, great anxiety reigned; but the faith of the sincere Mussulmans and the unchanging serenity of the Apostle got the best of it. On the other hand, the Confederates, despite all their advantage, were still smitten with terror at the thought of the mysterious forces that they always found facing them each time they fought against Allah's warriors; and dared not risk an attack before making sure that it would not turn out to be another miserable, humiliating failure. So they were contented with drawing near to the walls.

For twenty days and twenty nights, hostilities were limited to encircling the city and a few flights of arrows, without any result. Ashamed, at last, of their inaction, several horsemen of the Quraizah and Kinanas, got ready for the fray. In close rank, they broke away from the enemy front. Their breasts pressed to the necks of their steeds, they dashed forward in a frenzied charge, swallowed up in the orange-tinted whirlwind of dust.... Then suddenly, the living hurricane stopped dead, and when the clouds of sand enfolding the idolatrous riders lifted, they were seen petrified with affright in front of the deep ditch in which they had nearly been engulphed; whilst the horses, with twitching nostrils, their mouths twisted and bleeding by reason of the sudden jerk of the bit, stopping them in their forward bound, remained with stiffened, trembling legs on the edge of the trench....

'By our gods!' swore the Infidels, 'this is a trick that Arabs never play!' They sought for a spot where the moat was the most narrow, and savagely spurring on their steeds, they lifted them in fantastic jumping efforts and so reached the other side. Ali, followed by a few soldiers, went out to meet them. Getting between them and the ditch, he cut off their retreat. One of the men on horseback, Amr ibn Abd-i-Aud, of frightful aspect and gigantic stature, howled the vilest curses and challenged the Believers to single combat. With the permission of the Prophet who buckled on his own breastplate, rolled his turban round his head and placed his sword in his hand, Ali stood face to face with the giant. At the sight of his assailant, only a boy, Amr, the terrible, made a gesture of scorn and pity. 'I am loth to shed thy blood,' he said, 'for thy father was my friend '—'As for me,' retorted Ali, 'I shall have no compunction in shedding thine.'

At these words, Amr foamed with rage, and Ali bade him remark that if he despised his young adversary, he did not disdain to profit by remaining on horseback to defend himself against an enemy on foot. Amr jumped off his horse and hamstrung it; thereby showing that he did not wish to use it for fight or flight. Mad with rage at the mocking challenge of so youthful a foe, he beat his own face with his clenched fists.... Then he rushed at Ali, aiming a fierce blow which glanced lightly off the lad's forehead, after having smashed his shield to pieces.

As quick as lightning, Ali sprung on one side and, by an unexpected bound, got behind his adversary. Carried forward by the violence of his advance, the monster was bewildered and staggered when he tried to turn round. Ali seized the opportunity at once and made a skilful thrust. The blade pierced Amr's throat, through and through, cutting the carotid artery. An enormous gush of blood spurted from the gaping wound; like a drunken man, the colossus, with hoarse hiccoughs proceeding from his severed throat, made a few faltering steps and fell in a heap at the feet of Islam's champion.