Messenger of Allah ﷺ said, "You will be rewarded for whatever you spend for Allah's sake even if it were a morsel which you put in your wife's mouth."  

أَنَّهُ أَخْبَرَهُ أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِنَّكَ لَنْ تُنْفِقَ نَفَقَةً تَبْتَغِي بِهَا وَجْهَ اللَّهِ إِلَّا أُجِرْتَ عَلَيْهَا حَتَّى مَا تَجْعَلُ فِي فَمِ امْرَأَتِكَ  

[Machine] The Messenger of Allah ﷺ said, "If you leave your heirs wealthy, it is better than leaving them dependent on others. And you will not spend a sum seeking Allah's countenance except that you will be rewarded for it, even (the reward) for the morsel of food you put in your wife's mouth."  

قَالَ رَسُولُ اللهِ ﷺ «إِنْ تَدَعْ وَرَثَتَكَ أَغْنِيَاءَ خَيْرٌ مِنْ أَنْ تَدَعَهُمْ عَالَةً يَتَكَفَّفُونَ النَّاسَ وَلَنْ تُنْفِقَ نَفَقَةً تَبْتَغِي بِهَا وَجْهَ اللهِ إِلَّا أُجِرْتَ بِهَا حَتَّى مَا تَجْعَلُ فِي فِي امْرَأَتِكَ»  

Messenger of Allah ﷺ said, "You will be rewarded for whatever you spend for Allah's sake even if it were a morsel which you put in your wife's mouth." (Using translation from Bukhārī 56)  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ يَا سَعْدُ «إِنَّكَ لَنْ تُنْفِقَ نَفَقَةً تَبْتَغِي بِهَا وَجْهَ اللهِ إِلَّا أُجِرْتَ عَلَيْهَا حَتَّى اللُّقْمَةِ تَجْعَلُهَا فِي فِيِّ امْرَأَتِكَ»  

"إِنَّكَ لَن تُنْفِقَ نَفقَة تَبْتَغِى بها وجهَ اللَّه إِلَّا أُجِرْتَ بِهَا حَتَّى مَا تَجْعَلُ فِى في امْرَأتِك".