أَخْبَرَنَا مُحَمَّدُ بْنُ سَلَمَةَ، قَالَ حَدَّثَنَا ابْنُ وَهْبٍ، عَنْ عَمْرِو بْنِ الْحَارِثِ، أَنَّ أَبَا عُشَّانَةَ الْمَعَافِرِيَّ، حَدَّثَهُ عَنْ عُقْبَةَ بْنِ عَامِرٍ، قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ ‏"‏ يَعْجَبُ رَبُّكَ مِنْ رَاعِي غَنَمٍ فِي رَأْسِ شَظِيَّةِ الْجَبَلِ يُؤَذِّنُ بِالصَّلاَةِ وَيُصَلِّي فَيَقُولُ اللَّهُ عَزَّ وَجَلَّ انْظُرُوا إِلَى عَبْدِي هَذَا يُؤَذِّنُ وَيُقِيمُ الصَّلاَةَ يَخَافُ مِنِّي قَدْ غَفَرْتُ لِعَبْدِي وَأَدْخَلْتُهُ الْجَنَّةَ ‏"‏ ‏.‏

It was narrated that 'Uqbah bin 'Amir said: "I heard the Messenger of Allah (PBUH) say: 'Your Lord is pleased with a shepherd high in the mountains who calls the Adhan for the prayer and prays. Allah says: 'Look at this slave of Mine; he calls the Adhan and Iqamah for the prayer and fears Me. I have forgiven My slave and admitted him to Paradise.'" Translation Not Available

Book Ref: Sunan An Nisai Book 7 Hadith 674
Web Ref:  Sunan An Nisai Vol 1 Book 7 Hadith 667