It is narrated from Abu Sa'id (may Allah be pleased with him) that he heard the Prophet (peace and blessings of Allah be upon him) say: "You should only keep the company of a believer, and only a pious person should eat your food." Its chain is authentic. Narrated by al-Tirmidhi, Abu Dawood, and al-Darimi.
Hadith Referenceمشكوة المصابيح / كتاب الآداب / 5018
Hadith Gradingالألبانی:حسن | زبیر علی زئی:إسناده صحيح
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «إسناده صحيح، رواه الترمذي (2395 وقال: حسن صحيح) و أبو داود (4832) و الدارمي (103/2 ح2063)»