After meeting Nabi Ebrahim (‘alaihis salaam) in the seventh heaven and seeing the Bayt-ul-Ma’moor, Rasulullah (sallallahu ‘alaihi wasallam) was raised to the Sidrat-ul-Muntaha.
The Sidrat-ul-Muntaha is a large tree in the seventh heaven. When anything is raised from the earth to the heavens, it first stops at the Sidrat-ul-Muntaha, and thereafter it continues to rise into the heavens. Likewise, when anything is sent down from the angels in Mala'ul A'laa (the angles in the high assembly), it first stops at the Sidrat-ul-Muntaha, and thereafter it continues to descend. It is for this reason that this tree is called the Sidrat-ul-Muntaha (the lote tree of the end point).
It was here, at the Sidrat-ul-Muntaha, that Rasulullah (sallallahu ‘alaihi wasallam) saw Hazrat Jibreel (‘alaihis salaam) in his original form. Rasulullah (sallallahu ‘alaihi wasallam) had also witnessed some amazing spectacles of the Hereafter. Rasulullah (sallallahu ‘alaihi wasallam) also saw countless angels and golden butterflies around the Sidrat-ul-Muntaha.
(Extracted from Seeratul Mustafa 1/303)