and they swear by allah with the most energetic of their oaths that if you command them they would certainly go forth. say swear not reasonable obedience surely allah is aware of what you do.
وأقسموا بالله جهد أيمانهم لئن أمرتهم ليخرجن قل لا تقسموا طاعة معروفة إن الله خبير بما تعملون