It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Allah Almighty says, "If a servant comes near to Me by a handspan, I come near to him by a cubit; if he comes near to Me by a cubit, I come near to him by a fathom."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 9617