Sayyiduna Abu Hurairah (may Allah be pleased with him) narrated from the Messenger of Allah (peace and blessings be upon him), he said: "Whoever remembers Allah within himself, Allah remembers him within Himself. Whoever remembers Allah in an assembly, Allah remembers him in an assembly better than the one in which he remembered Him. Whoever draws near to Him by a span, He draws near to him by a cubit. Whoever draws near to Him by a cubit, He draws near to him by two arm-lengths. Whoever comes to Him walking, He comes to him running. And whoever comes to Him running, He comes to him at speed."
Hadith Referenceمسند اسحاق بن راهويه / كتاب الدعوات / 824
Hadith Takhrij«بخاري ، كتاب التوحيد ، باب قول الله تعالىٰ (وبحذركم الله نفسه) رقم : 7405 . مسلم ، كتاب الذكر والدعاء باب الحث على ذكر الله تعالىٰ ، رقم : 2675 . مسند احمد : 435/2 . صحيح ابن حبان ، رقم : 376 .»