It is said that: the “Qaaf” is a mountain range which encompasses the entire world, beyond it is the Primordial Griffon which surrounds everything, and is the Veil of the Sustaining Lord, no one knows of it except the one who attains the station of the heart. The only one disclosed to this Primordial Veil is the one who has become disclosed to this Mountain which swears by means of it. In the meaning of the words of Allah ta`ala: “He created the heavens without any supports which you can see.” Al-Layth said: “The meaning of this verse is that you cannot see its supports, yet it has supports, because its support is the Mountain of Qaaf which encompasses this entire world as well as the heavens like a primordial dome.” It is said that the blueish green color of the heavens from this Mountain. It will be transformed on the Day of Judgment into fire which will drive all of mankind to the place of the Gathering. Source: Commentary on the Al-Munaajat of Sh. Uthman Fodio by Shaykh Muhammad Shareef