Allah says, I am as My servant thinks I am, and I am with him when he remembers Me. If he remembers Me to himself, I remember him to Myself ; and if he remembers me in a gathering, I remember him in a gathering better than it. If he draws near to Me a hand's span, I draw near to him an arm's length; if he draws to Me an arm's length, I draw near to him a fathom's length; and if he comes to Me walking, I go to him with haste.

Reported by Bukhari, Muslim, Al-Tarmidhi & Ibn Majah, Hadeeth.