Our Lord, indeed we have heard a caller calling to the faith, [saying], ‘Believe in your Lord,’ so we have believed.
رَّبَّنَا إِنَّنَا سَمِعْنَا مُنَادِيًا يُنَادِي لِلْإِيمَانِ أَنْ آمِنُوا بِرَبِّكُمْ فَآمَنَّا
Rabbanaa innanaa sami’naa munaadiyan yunaadee lil’eemaani an aaminoo birabbikum fa’aamannaa
Surah Al-Imran,verse 193
(“Our Lord! Verily, we have heard the call of one calling to faith,”), a caller who calls to faith, referring to the Messenger of Allah ,
(`Believe in your Lord,’ and we have believed), accepted his call and followed him.