Allah the Exalted said, `O son of Adam! If you mention Me to yourself, I will mention you to Myself. If you mention Me in a gathering, I will mention you in a gathering of the angels (or said in a better gathering). If you draw closer to Me by a hand span, I will draw closer to you by forearm's length. If you draw closer to Me by a forearm's length, I will draw closer to you by an arm's length. And if you come to Me walking, I will come to you running).

As narrated by Imam Ahmad who reported that Anas narrated that Allah's Messenger(peace be upon him) had said.