The nearest a slave is to his Lord is when he is prostrating, so increase (your) supplications (while in this state). - [Muslim]
«أقْرَبُ ما يَكون العبد مِنْ رَبِّهِ وهو ساجد، فَأَكْثروا الدُّعاء».[صحيح.] - [رواه مسلم.]