Arabic Text
حَدَّثَنَا الْحَكَمُ بْنُ نَافِعٍ قَالَ أَخْبَرَنَا شُعَيْبٌ عَنْ الزُّهْرِيِّ قَالَ حَدَّثَنِي عَامِرُ بْنُ سَعْدٍ عَنْ سَعْدِ بْنِ أَبِي وَقَّاصٍ أَنَّهُ أَخْبَرَهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ "إِنَّكَ لَنْ تُنْفِقَ نَفَقَةً تَبْتَغِي بِهَا وَجْهَ اللَّهِ إِلَّا أُجِرْتَ عَلَيْهَا حَتَّى مَا تَجْعَلُ فِي فَمِ امْرَأَتِكَ
English Translation
Allah's Apostle 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."
This hadith is from Sahih al-Bukhari, the most rigorously authenticated collection in Islamic scholarship. No editorial opinion is added.