Qur'an 5:111 · Al-Maaida

وَإِذْ أَوْحَيْتُ إِلَى ٱلْحَوَارِيِّۦنَ أَنْ ءَامِنُوا۟ بِى وَبِرَسُولِى قَالُوٓا۟ ءَامَنَّا وَٱشْهَدْ بِأَنَّنَا مُسْلِمُونَ

(111) And [remember] when I inspired to the disciples, "Believe in Me and in My messenger [i.e., Jesus]." They said, "We have believed, so bear witness that indeed we are Muslims [in submission to Allāh]."