they solemnly swear by allah and say if you order us we will leave our homes. say to them do not swear oaths for your `obedience is well known allah is fully aware of what you are doing. 
وأقسموا بالله جهد أيمانهم لئن أمرتهم ليخرجن قل لا تقسموا طاعة معروفة إن الله خبير بما تعملون