Sahih Muslim | Book 35 | Hadith Number 6496

Narrated by Abu Huraira
Abu Huraira reported Allah's Apostle (may peace be upon him) 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 hands, and when he draws close to Me by the space (covered) by two hands, I go in hurry towards him.