وَلَقَدْ جَاءَتْ رُسُلُنَا إِبْرَاهِيمَ بِالْبُشْرَىٰ قَالُوا سَلَامًا ۖ قَالَ سَلَامٌ ۖ فَمَا لَبِثَ أَن جَاءَ بِعِجْلٍ حَنِيذٍ (69)
(11:69) Indeed Our messengers came to Abraham, bearing glad tidings. They greeted him with 'peace', and Abraham answered back to them 'peace', and hurriedly brought to them a roasted calf. *75
*75). This shows that the angels visited Prophet Abraham (peace be on him) in human form and that initially they did not disclose their identity. Prophet Abraham (peace be on him), therefore, thought that they were strangers, and immediately arranged a good meal for them.