Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates: I know it only as (narrated) from the Messenger of Allah (peace and blessings be upon him), that he (peace and blessings be upon him) said: "Indeed, the one who eats and is grateful is, in reward, like the patient one who fasts."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصيام / 8520