مسند اسحاق بن راهويه
Musnad Ishaq Bin Rahwiya
كتاب الصلوٰة
Book of Prayer
Virtue of giving adhan for the sake of Allah's pleasure
Hadith Number: 204
قال جابر: وقال عامر عن سعد بن ابی وقاص، انه قال: لان اقوٰی علی الاذان محتسبا احب الی من الجهاد، والحج والعمرة.
It is narrated from Sayyiduna Sa’d bin Abi Waqqas (may Allah be pleased with him) that he said: To have the ability to call the adhan with the intention of reward for the sake of Allah’s pleasure is more beloved to me than jihad, Hajj, and ‘Umrah.