It is narrated marfu'an from Hazrat Abu Huraira (may Allah be pleased with him) that remember, whoever gives to the people of a household a she-camel as a gift, such that it fills a vessel with milk in the morning and fills a vessel in the evening, its reward is very great.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 7301