السلام عليكم
بِسْمِ اللهِ الرَّحْمنِ الرَّحِيمِ
Rasululiah (صلى الله عليه و سلم ) was asked: O Rasululiah! At what time is Du'a the most readily listened to and accepted?
He (صلى الله عليه و سلم ) replied: The one made during the course of latter part of the night, and after the obligatory Salat.
[Tirmidhi]
