Surah Ali 'Imran · Ayah 81

وَإِذْ أَخَذَ ٱللَّهُ مِيثَٰقَ ٱلنَّبِيِّۦنَ لَمَآ ءَاتَيْتُكُم مِّن كِتَٰبٍۢ وَحِكْمَةٍۢ ثُمَّ جَآءَكُمْ رَسُولٌۭ مُّصَدِّقٌۭ لِّمَا مَعَكُمْ لَتُؤْمِنُنَّ بِهِۦ وَلَتَنصُرُنَّهُۥ ۚ قَالَ ءَأَقْرَرْتُمْ وَأَخَذْتُمْ عَلَىٰ ذَٰلِكُمْ إِصْرِى ۖ قَالُوٓا۟ أَقْرَرْنَا ۚ قَالَ فَٱشْهَدُوا۟ وَأَنَا۠ مَعَكُم مِّنَ ٱلشَّٰهِدِينَ

Wa iz akhazal laahu meesaaqan Nabiyyeena lamaaa aataitukum min Kitaabinw wa Hikmatin summa jaaa'akum Rasoolum musaddiqul limaa ma'akum latu'minunna bihee wa latansurunnah; qaala 'aaqrartum wa akhaztum alaa zaalikum isree qaalooo aqrarnaa; qaala fashhadoo wa ana ma'akum minash shaahideen

And [recall, O People of the Scripture], when Allah took the covenant of the prophets, [saying], "Whatever I give you of the Scripture and wisdom and then there comes to you a messenger confirming what is with you, you [must] believe in him and support him." [Allah] said, "Have you acknowledged and taken upon that My commitment?" They said, "We have acknowledged it." He said, "Then bear witness, and I am with you among the witnesses."