The lineage of Hassan is connected with Muhammed Sabah Zamérí; his grandfather, who descended from the family of Sábah Zamérí, came from Yemen to Kúfa, from Kúfa to Kam, and from Kam to Ráí. His father is also said to have been Alí,[627] a person devout and learned in the religion of Ismâílísm; he found a livelihood in the country of Ráí. The judge of this province, Abú Muslem Rází, on account of the contrariety of religion, bore him enmity. At the time when the Imám Mavafek Níshápúrí, one of the most learned Sonnites, flourished in Khorássan, the father (Alí), in order to remove from the suspicions of the enemy, having brought his fortunate son to Níshápúr, into the society of the Imam Movafik, procured him the opportunity of being intent upon his own advantage, whilst he himself, seated in the corner of tranquillity, devoted himself to piety. He never permitted himself speech above the comprehension of the vulgar, for fear that any person might consider them speeches of heretics and infidels, and accuse him of impiety and irreligion. Hassan was a condisciple of Nizam al mulk, of Tús,[628] and Omar Khayám[629] of Níshápúr. As his glorious father had revealed to him that Nizám al Mulkh would rise to a high rank of worldly greatness, and Hassan to a great dignity, visible and invisible, therefore Hassan said to Nizam al mulk: “Whichever of us attains a high dignity, shall divide the fortune by him acquired between us three equally;” and in this sense they bound themselves by a covenant. When khájah became a vizir in the time of Alp Arselan,[630] then Hakím Omar Khayám came to him, and in the corner of contemplative retirement, devoted himself to the acquisition of virtues. Khojah took no notice of his arrival. Hassan expected that Nizam al mulk would call him to his presence; disappointed in this, he, during the reign of Alp Arslan, did not join Khajah, but in the time of Sultan Malik Shah[631] he presented himself in Níshápúr to Khajah, but the latter did not mind the covenant that he had made, nor introduce him to the assembly of the king. Helpless then, the _Sayid al táífah_, “the chief of the sect,” that is, Hassan, said to Khájah: “Thou belongest to the learned, and to the companions of certainty, and thou knowest that the world is a vile object; should such a meanness be allowable, that thou, on account of rank and the love of sway, shouldst exhibit thyself a violator of promises, and enter the number of those of whom it is said: ‘They break the covenant of God.’” “Place the hand of faith into the girdle of promise, And endeavor to be no breaker of thy word.”