Rasulullah (sallallahu ‘alaihi wasallam) then proceeded to the fourth heaven where he met Nabi Idrees (‘alaihis salaam). From there, Rasulullah (sallallahu ‘alaihi wasallam) went to the fifth heaven where he met Nabi Haroon (‘alaihis salaam). Rasulullah (sallallahu ‘alaihi wasallam) then went to the sixth heaven where he met Nabi Musa (‘alaihis salaam). Thereafter, Rasulullah (sallallahu ‘alaihi wasallam) proceeded to the seventh heaven where he met Nabi Ebrahim (‘alaihis salaam).

On meeting Nabi Ebrahim (‘alaihis salaam), Rasulullah (sallallahu ‘alaihi wasallam) saw that he was seated with his back resting against the Bayt-ul-Ma’moor. The Bayt-ul-Ma’moor is the qiblah of the angels in the heavens, and it is exactly in line with the Ka’bah Shareef on earth. Hence, if hypothetically the Bayt-ul-Ma’moor had to fall from the heavens, then it would fall onto the Ka’bah Shareef. Every day, seventy thousand angels perform tawaaf of the Bayt-ul-Ma’moor, and thereafter, they do not receive another opportunity to do so (on account of the large number of angels).

Hazrat Jibreel (‘alaihis salaam) said to Rasulullah (sallallahu ‘alaihi wasallam), “This is your father, Nabi Ebrahim (‘alaihis salaam). You should greet him with salaam.” Rasulullah (sallallahu ‘alaihi wasallam) thus greeted him with salaam, to which Nabi Ebrahim (‘alaihis salaam) replied with salaam and said, “Welcome to the one who is a pious son and a pious Nabi.”

(Extracted from Seeratul Mustafa 1/302-303)