Mishkat al-Masabih
Mishkat al-Masabih 177
وَعَنْ جَابِرٌ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ حِينَ أَتَاهُ عُمَرُ فَقَالَ إِنَّا نَسْمَعُ أَحَادِيثَ مِنْ يَهُودَ تُعْجِبُنَا أَفْتَرَى أَنْ نَكْتُبَ بَعْضَهَا؟ فَقَالَ: «أَمُتَهَوِّكُونَ أَنْتُمْ كَمَا تَهَوَّكَتِ الْيَهُودُ وَالنَّصَارَى؟ لَقَدْ جِئْتُكُمْ بِهَا بَيْضَاءَ نَقِيَّةً وَلَوْ كَانَ مُوسَى حَيًّا مَا وَسِعَهُ إِلَّا اتِّبَاعِي» . رَوَاهُ أَحْمد وَالْبَيْهَقِيّ فِي كتاب شعب الايمان
Jābir reported that when ʿUmar came to the Prophet and said, ‘We hear reports from the Jews that we find compelling. Do you think we should write some of them down?’ he replied: ‘Are you confused as the Jews and Christians became confused? I have brought you a clear, pure teaching. If Moses were alive, he would have no choice but to follow me.’ Aḥmad transmitted it, as did al-Bayhaqī in Shuʿab al-Īmān.