Surah An-Noor, Verse 53
Translation — Sahih International
And they swear by Allah their strongest oaths that if you ordered them, they would go forth [in Allah 's cause]. Say, "Do not swear. [Such] obedience is known. Indeed, Allah is Acquainted with that which you do."
Source
Kur'an-ı Kerim, Nûr Suresi 24:53
https://kuran.diyanet.gov.tr/mushaf/kuran-meal-2/24-suresi-53-ayet