'Verily Allah's greatest Name is composed of seventy-three letters, of which Asaf [b. Barkhiyya] had but one, with the utterance of which he caused the earth between himself and Bilqis 's throne to sink until he got hold of the throne, and after which [he caused] the earth to return to its former state faster than the blink of an eye. And we [the Ahl al-Bayt] have seventy-two letters from the greatest Name, and Allah, Blessed and most High, has exclusive possession of one letter of it with Him in His knowledge of the Unseen.'