Abu Huraira narrated that Rasoolullahﷺ said, “A man set out to visit his brother from another town, so Allahﷻ‎ sent an angel to watch over his steps. When the angel came to him, he said: Where are you going? The man said: I am visiting a brother of mine in this town. The angel said: Do you have a favor over him to be repaid? He said: No, only that I love him for the sake of Allahﷻ‎. The angel said: I am a messenger from Allahﷻ‎ to tell you that Allahﷻ‎ loves you as you love him.”

Source: Ṣaḥīḥ Muslim