The Messenger of Allah ﷺ said, "The sanctity of the wives of those who go out to fight in Allah's cause is, for those who stay behind, like the sanctity of their own mothers. There is no man who is left in charge of the wife of one who has gone out to fight and then betrays him regarding her, but that this betrayer will be made to stand before him on the Day of Resurrection, and the one betrayed will take from his good deeds whatever he wishes. So what do you think will be left?"
أخبرنا حسين بن حريث ومحمود بن غيلان واللفظ لحسين قالا حدثنا وكيع عن سفيان عن علقمة بن مرثد
قال رسول الله ﷺ حرمة نساء المجاهدين على القاعدين كحرمة أمهاتهم وما من رجل يخلف في امرأة رجل من المجاهدين فيخونه فيها إلا وقف له يوم القيامة فأخذ من عمله ما شاء فما ظنكم