Sayyiduna Abu Juhayfah (may Allah be pleased with him) said: I drew near to the Messenger of Allah (peace and blessings be upon him) while he was at al-Abtah, and the sun had passed its zenith; then Sayyiduna Bilal (may Allah be pleased with him) came out and called the adhan for the prayer.
Hadith Referenceالمعجم الكبير للطبراني / باب الواو / 18526