the nature of sincere faith

۞ وَأَقْسَمُوا۟ بِٱللَّهِ جَهْدَ أَيْمَـٰنِهِمْ لَئِنْ أَمَرْتَهُمْ لَيَخْرُجُنَّ ۖ قُل لَّا تُقْسِمُوا۟ ۖ طَاعَةٌ مَّعْرُوفَةٌ ۚ إِنَّ ٱللَّهَ خَبِيرٌۢ بِمَا تَعْمَلُونَ

And they swear by Allāh their strongest oaths that if you ordered them, they would go forth [in Allāh's cause]. Say, "Do not swear. [Such] obedience is known. Indeed, Allāh is [fully] Aware of that which you do."