It was narrated that 'Uqbah bin 'Amir said: "I heard the Messenger of Allah (ﷺ) 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.'"
Source: sunnah.com
Other translations
Arabic
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 " .
sunnah.com