When he heard the solutions of his questions he fell from his chair, and on recovering his senses adopted the pure faith. The prophet Sásán the Fifth, in his select commentary on the _Dasátir_ and the interpretation of the code of Zardusht, relates, that when Isfendiar had promulgated the pure faith, the eminent sages of Greece dispatched a learned man, named _Niyátús_,[432] to interrogate the prophet of the Lord concerning the exact nature of his tenets. Gushtasp, having assigned him an audience on a most auspicious day. this distinguished Greek, on beholding the face of Zardusht, said: “From this face, knowledge, sagacity, and science are manifest as the properties of a mind so formed; and this is not the physiognomy of one who utters falsehoods.” He then asked him concerning the moment, day, month, and year of his birth, which being communicated by Zardusht, Niyátús observed: “Under such a horoscope, a person of weak intellects cannot be born.” He next questioned him concerning his food, sleep, and mode of life, which being also explained, Niyátús added: “From this rule of life he cannot be an impostor.” The prophet of the Lord then said to him: “Keep in thy heart whatever thou desirest to inquire about, and utter it not with thy tongue; as the Almighty has acquainted me with it, and for my sake has sent me his word in this chapter relative to these matters.” On this, one of the prophet’s disciples read to Niyátús, out of a single chapter, all that was laid up in the noble envoy’s breast, and whatever he was commissioned to enquire about, at the desire of the eminent men of Greece.