Narrated AbuNamlah al-Ansari:

When he was sitting with the Messenger of Allah ﷺ and a Jew was also with him, a funeral passed by him. He (the Jew) asked (Him): Muhammad, does this funeral speak? The Prophet ﷺ said: Allah has more knowledge. The Jew said: It speaks.

The Messenger of Allah ﷺ said: Whatever the people of the Book tell you, do not verify them, nor falsify them, but say: We believe in Allah and His Apostle. If it is false, do not confirm it, and if it is right, do not falsify it.

حَدَّثَنَا أَحْمَدُ بْنُ مُحَمَّدِ بْنِ ثَابِتٍ الْمَرْوَزِيُّ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنِ الزُّهْرِيِّ، أَخْبَرَنِي ابْنُ أَبِي نَمْلَةَ الأَنْصَارِيُّ، عَنْ أَبِيهِ، أَنَّهُ بَيْنَمَا هُوَ جَالِسٌ عِنْدَ رَسُولِ اللَّهِ ﷺ وَعِنْدَهُ رَجُلٌ مِنَ الْيَهُودِ مُرَّ بِجَنَازَةٍ فَقَالَ يَا مُحَمَّدُ هَلْ تَتَكَلَّمُ هَذِهِ الْجَنَازَةُ فَقَالَ النَّبِيُّ ﷺ " اللَّهُ أَعْلَمُ " . فَقَالَ الْيَهُودِيُّ إِنَّهَا تَتَكَلَّمُ . فَقَالَ رَسُولُ اللَّهِ ﷺ " مَا حَدَّثَكُمْ أَهْلُ الْكِتَابِ فَلاَ تُصَدِّقُوهُمْ وَلاَ تُكَذِّبُوهُمْ وَقُولُوا آمَنَّا بِاللَّهِ وَرُسُلِهِ فَإِنْ كَانَ بَاطِلاً لَمْ تُصَدِّقُوهُ وَإِنْ كَانَ حَقًّا لَمْ تُكَذِّبُوهُ " .