On the authority of Uqbah ibn Amir (may Allah be pleased with him), who said: I heard the messenger of Allah (peace and blessings of Allah be upon him) say:

"Your Lord delights at a shepherd who, on the peak of a mountain crag, gives the call to prayer and prays. Then Allah (glorified and exalted be He) will say: 'Look at this servant of Mine, he gives the call to prayer and performs the prayers; he is in awe of Me. I have forgiven My servant [his sins] and have admitted him to Paradise.'"

[An-Nasa'i with a good chain of authorities]