It is narrated from Hazrat Anas (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) said: Whoever comes closer to Allah by a handspan, Allah comes closer to him by a cubit; and whoever comes closer to Allah by a cubit, Allah comes closer to him by a fathom; and whoever comes to Allah walking, Allah comes to him running.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 12287
Hadith Gradingحکم دارالسلام:إسناده صحيح ، خ : 7536