After meeting Nabi Aadam (‘alaihis salaam) in the first heaven, Rasulullah (sallallahu ‘alaihi wasallam) came to the second heaven. On coming to the second heaven, Hazrat Jibreel (‘alaihis salaam) once again requested permission to enter.
The angel who was the doorkeeper of the second heaven asked Hazrat Jibreel (‘alaihis salaam), “Who is this person with you?” Hazrat Jibreel (‘alaihis salaam) replied, “He is Muhammed (sallallahu ‘alaihi wasallam).” The doorkeeper then asked, “Was he invited here?” When Hazrat Jibreel (‘alaihis salaam) replied in the affirmative, the doorkeeper said:
مرحبا نعم المجيء جاء
He is welcome, and how excellently he has arrived!
Here, in the second heaven, Rasulullah (sallallahu ‘alaihi wasallam) saw Nabi Yahya (‘alaihis salaam) and Nabi Isa (‘alaihis salaam). On seeing them, Hazrat Jibreel (‘alaihis salaam) said, “This is Nabi Yahya (‘alaihis salaam) and Nabi Isa (‘alaihis salaam). You should greet them with salaam.” Rasulullah (sallallahu ‘alaihi wasallam) thus made salaam to them, and they replied by also making salaam and saying:
مرحبا بالأخ الصالح وبالنبي الصالح
Welcome to the one who is our pious brother and a pious Nabi!
(Extracted from Seeratul Mustafa 1/302)