Riyad as-SalihinChapter 15Hadith 749
Full Sharh — Riyad as-Salihin 749
وعن أبي هريرة رضي الله عنه أن رسول الله صلى الله عليه وسلم قال: "أقرب ما يكون العبد من ربه وهو ساجد، فأكثروا الدعاء" ((رواه مسلم)).
English Translation
Abu Hurairah (May Allah be pleased with him) reported:: The Messenger of Allah (ﷺ) said, "A slave becomes nearest to his Rubb when he is in prostration. So increase supplications while prostrating.".
Source
Riyad as-Salihin(رياض الصالحين)
The Book of the Remembrance of Allah
Hadith Number
749