Anas (May Allah be pleased with him) reported:
The Prophet ﷺ came to visit Sa'd bin 'Ubadah (May Allah be pleased with him) who presented bread and olive oil to him. The Prophet ﷺ ate it and said, "The observers of fast have broken their fast with you (this is the literal translation, but the meaning is: 'May Allah reward you for providing a fasting people with food to break their fast') the pious people have eat your food and the angels invoked blessings on you."

[Abu Dawud].

وعن أنس رضي الله عنه أن النبي ﷺ جاء إلى سعد بن عبادة رضي الله عنه فجاء بخبز وزيت، فأكل ثم قال النبي ﷺ:
"أفطر عندكم الصائمون وأكل طعامكم الأبرار وصلت عليكم الملائكة". ((رواه أبو داود بإسناد صحيح)).