Footsteps in Heaven

It is related by Abu Hurayrah that the Prophet (s) once said to Bilal at the time of fajr: "Tell me about your act from which you expect the most in your Islam, for I have heard the sound of your footsteps in heaven."

"I have done nothing," replied Bilal, "which could give me hope, except that when I perform the wudu' in any part of the day or night I try to offer as much of salah with it as I can." (al-Bukhari)
-- from The Four Pillars of Islam by Abul Hasan Ali Nadwi