What is faith (eeman)? He said:“To believe in Allah, His Angels, His Books, His Messengers, the Last Day and the divine decree, both good and bad,” Jibreel said to him: You have spoken the truth. He said: We were amazed that he asked him and then confirmed his answers as being correct. The Prophet ﷺ said: “That was Jībreel, who came to teach you your religion.ʿ
لِلنَّبِيِّ ﷺ مَا الْإِيمَانُ؟قَالَ أَنْ تُؤْمِنَ بِاللهِ وَمَلائِكَتِهِ وَكُتُبِهِ وَرُسُلِهِ وَالْيَوْمِ الْآخِرِ وَبِالْقَدَرِ خَيْرِهِ وَشَرِّهِ فَقَالَ لَهُ جِبْرِيلُ صَدَقْتَ قَالَ فَتَعَجَّبْنَا مِنْهُ يَسْأَلُهُ وَيُصَدِّقُهُ قَالَ فَقَالَ النَّبِيُّ ﷺ ذَاكَ جِبْرِيلُ أَتَاكُمْ يُعَلِّمُكُمْ مَعَالِمَ دِينِكُمْ