Those who were left behind were glad on account of their sitting behind Allah's Messenger and they were averse from striving m Allah's way with their property and their persons, and said: Do not go forth in the heat. Say: The fire of hell is much severe in heat. Would that they understood (it).

And (as for) those who put away their wives by likening their backs to the backs of their mothers then would recall what they said, they should free a captive before they touch each other; to that you are admonished (to conform); and Allah is Aware of what you do.