كتاب الذكر والدعاء والتوبة والاستغفار
48  
The Book Pertaining to the Remembrance of Allah, Supplication, Repentance and Seeking Forgiveness
(6)
Chapter: The Virtue Of Remembrance, Supplication, Drawing Close To Allah And Thinking Positively Of Him
(6)
باب فَضْلِ الذِّكْرِ وَالدُّعَاءِ وَالتَّقَرُّبِ إِلَى اللَّهِ تَعَالَى
Sahih Muslim 2675 e

Abu Huraira reported Allah's Apostle (ﷺ) as saying that Allah, the Exalted and Glorious, said:

When My servant draws close to Me by the span of a palm, I draw close to him by the cubit and when he draws close to Me by the cubit, I draw close to him by the space (covered) by two armspans, and when he comes to me walking, I go in a hurry towards him.
حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارِ بْنِ عُثْمَانَ الْعَبْدِيُّ، حَدَّثَنَا يَحْيَى، - يَعْنِي ابْنَ سَعِيدٍ - وَابْنُ أَبِي عَدِيٍّ عَنْ سُلَيْمَانَ، - وَهُوَ التَّيْمِيُّ - عَنْ أَنَسِ بْنِ مَالِكٍ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏ "‏ قَالَ اللَّهُ عَزَّ وَجَلَّ إِذَا تَقَرَّبَ عَبْدِي مِنِّي شِبْرًا تَقَرَّبْتُ مِنْهُ ذِرَاعًا وَإِذَا تَقَرَّبَ مِنِّي ذِرَاعًا تَقَرَّبْتُ مِنْهُ بَاعًا - أَوْ بُوعًا - وَإِذَا أَتَانِي يَمْشِي أَتَيْتُهُ هَرْوَلَةً ‏"‏ ‏.‏
Reference : Sahih Muslim 2675e
In-book reference : Book 48, Hadith 26
USC-MSA web (English) reference : Book 35, Hadith 6496
  (deprecated numbering scheme)