عن أبي هريرة، عن النبي صلى الله عليه وسلم قال: “أَقْرَبُ مَا يَكُونُ الْعَبْدُ مِنْ رَبِّهِ وَهُوَ سَاجِدٌ فَأَكْثِرُوا الدُّعَاءَ " صحيح البخاري
Abu Huraira reported: 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).” Sahih Muslim 482 In-book reference : Book 4, Hadith 245
USC-MSA web (English) reference : Book 4, Hadith 979