The Messenger of Allah ﷺ said: The nearest a servant comes to his Lord is when he is prostrating himself, so make supplication (in this state).

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ أَقْرَبُ مَا يَكُونُ الْعَبْدُ مِنْ رَبِّهِ وَهُوَ سَاجِدٌ فَأَكْثِرُوا الدُّعَاءَ