It is narrated from Hazrat Anas (may Allah be pleased with him) that when the Prophet (peace and blessings be upon him) would break his fast at someone's place, he would say: "The fasting people have broken their fast with you, the righteous have eaten your food, and the angels of mercy have descended upon you."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 13086
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد ضعيف لانقطاعه، يحيى بن أبى كثير لم يسمع من أنس، وانظر الحديث الموصول، برقم: 12406.