The Prophet ﷺ said: “Whoever gives a fasting person food to break his fast has a reward like his, without anything being diminished from the fasting person's reward.” (Tirmidhī — ṣaḥīḥ). And a single day's fast in Allah's cause keeps the Fire seventy years away. (al-Bukhārī & Muslim).
العربية: عن زيد بن خالد الجهني رضي الله عنه قال: قال رسول الله ﷺ: «مَن فطّر صائمًا كان له مثلُ أجره، غير أنه لا ينقص من أجر الصائم شيئًا». (رواه الترمذي وصححه الألباني).
Sponsor an iftar or send food to someone fasting — a great reward for a small gift.