﴿ ۞ وَأَقْسَمُوا۟ بِٱللَّهِ جَهْدَ أَيْمَٰنِهِمْ لَئِنْ أَمَرْتَهُمْ لَيَخْرُجُنَّ ۖ قُل لَّا تُقْسِمُوا۟ ۖ طَاعَةٌۭ مَّعْرُوفَةٌ ۚ إِنَّ ٱللَّهَ خَبِيرٌۢ بِمَا تَعْمَلُونَ ﴾

“Now [as for those half-hearted ones,] they do swear by God with their most solemn oaths that if thou [O Apostle] shouldst ever bid them to do so, they would most certainly go forth [and sacrifice themselves]. Say: “Swear not! Reasonable compliance [with God’s message is all that is required of you]. Verily, God is aware of all that you do!””

And they swear by God solemn oaths that if you order them to participate in the struggle they will surely go forth. Say to them ‘Do not swear! Acknowledged obedience to the Prophet is better than the oaths to which you are not true. Surely God is Aware of what you do’ when you say you will obey but act otherwise.