“The Closest a Servant is to his Lord is when he is in
Prostration”[Muslim 482]
Shaikh Ibn ul-‘Uthaymeen رحمه
الله stated:
“This is because he has placed his forehead (face) – the
highest and most honourable part of his body – down in the ground where people
treat upon with their feet, in doing so he demonstrates the perfection of
subservience to Allah.
The one standing up is actually higher up physically than
the one down in prostration, however since the prostrating one humbled himself
to Allah, consequently Allah raised him and so he is actually closer to Allah.
So it is appropriate you make plentiful supplications in
these prostrations – whether obligatory or supererogatory prayers -, and you
supplicate for whatever you wish (after completing the prescribed
supplications) as long as it not sin or cutting the ties of kinship.
So a student of knowledge may ask “O’ Allah increase me in
knowledge and grant me understanding and memorization”, the one building a house
may ask ‘O’ Allah aid me in the completion of the house”, the youth may ask “O’
Allah grant me a wife”…and so on”.
صفة
الصلاة (بتصرف يسير) الشيخ العثيمين ص124
@AbuMuadhTaqweem