﴿ أَمْ تَسْـَٔلُهُمْ أَجْرًۭا فَهُم مِّن مَّغْرَمٍۢ مُّثْقَلُونَ ﴾

“Or is it that [they who reject thy message, O Muhammad, fear lest] thou ask of them a reward, so that they would be burdened with debt [if they should listen to thee]?”

Or are you asking them for a fee a wage in return for what you have brought them in the way of religion so that they are weighed down with debt? with the liability for this so that they are unable to submit to God.