The Messenger of Allah said: "Whoever provides the food for a fasting person to break his fast with, then for him is the same reward as his (the fasting person's), without anything being diminished from the reward of the fasting person."  

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ فَطَّرَ صَائِمًا كَانَ لَهُ مِثْلُ أَجْرِهِ غَيْرَ أَنَّهُ لاَ يَنْقُصُ مِنْ أَجْرِ الصَّائِمِ شَيْئًا