Thus Joseph became the slave of the idolatrous priest Potiphar, or Poti-phera, as he was sometimes called.[100] He had secured possession of the handsome youth for a lewd purpose, but the angel Gabriel mutilated him in such manner that he could not accomplish it.[101] His master soon had occasion to notice that Joseph was as pious as he was beautiful, for whenever he was occupied with his ministrations, he would whisper a prayer: "O Lord of the world, Thou art my trust, Thou art my protection. Let me find grace and favor in Thy sight and in the sight of all that see me, and in the sight of my master Potiphar." When Potiphar noticed the movement of his lips, he said to Joseph, "Dost thou purpose to cast a spell upon me?" "Nay," replied the youth, "I am beseeching God to let me find favor in thine eyes." His prayer was heard. Potiphar convinced himself that God was with Joseph. Sometimes he would make a test of Joseph's miraculous powers. If he brought him a glass of hippocras, he would say, "I would rather have wine mixed with absinthe," and straightway the spiced wine was changed into bitter wine. Whatever he desired, he could be sure to get from Joseph, and he saw clearly that God fulfilled the wishes of his slave. Therefore he put all the keys of his house into his hand, and he knew not aught that was with him,[102] keeping back nothing from Joseph but his wife.[103] Seeing that the Shekinah rested upon him, Potiphar treated Joseph not as a slave, but as a member of his family, for he said, "This youth is not cut out for a slave's work, he is worthy of a prince's place."[104] Accordingly, he provided instruction for him in the arts, and ordered him to have better fare than the other slaves.[105] Joseph thanked God for his new and happy state. He prayed, "Blessed art Thou, O Lord, that Thou hast caused me to forget my father's house." What made his present fortunes so agreeable was that he was removed from the envy and jealousy of his brethren. He said: "When I was in my father's house, and he gave me something pretty, my brethren begrudged me the present, and now, O Lord, I thank Thee that I live amid plenty." Free from anxieties, he turned his attention to his external appearance. He painted his eyes, dressed his hair, and aimed to be elegant in his walk. But God spake to him, saying, "Thy father is mourning in sackcloth and ashes, while thou dost eat, drink, and dress thy hair. Therefore I will stir up thy mistress against thee, and thou shalt be embarrassed."[106] Thus Joseph's secret wish was fulfilled, that he might be permitted to prove his piety under temptation, as the piety of his fathers had been tested.[107] JOSEPH AND ZULEIKA