When is a person closest to Allah the Mighty and Sublime?

It was narrated from Abu Hurairah that:

The Messenger of Allah ﷺ said: "The closest that a person can be to his Lord, the Mighty and Sublime, is when he is prostrating, so increase in supplication then."

أَخْبَرَنَا مُحَمَّدُ بْنُ سَلَمَةَ، قَالَ حَدَّثَنَا ابْنُ وَهْبٍ، عَنْ عَمْرٍو، - يَعْنِي ابْنَ الْحَارِثِ - عَنْ عُمَارَةَ بْنِ غَزِيَّةَ، عَنْ سُمَىٍّ، أَنَّهُ سَمِعَ أَبَا صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ " أَقْرَبُ مَا يَكُونُ الْعَبْدُ مِنْ رَبِّهِ عَزَّ وَجَلَّ وَهُوَ سَاجِدٌ فَأَكْثِرُوا الدُّعَاءَ " .