Hadithcore
Sahih Muslim, 2997 a
sahih

Abu Huraira reported that Allah's Messenger (ﷺ) said:

A group of Bani Isra'il was lost. I do not know what happened to it, but I think (that it 'underwent a process of metamorphosis) and assumed the shape of rats. Don't you see when the milk of the camel is placed before them, these do not drink and when the milk of goat is placed before them, these do drink. Abu Huraira said: I narrated this very hadith to Ka'b and he said: Did you hear this from Allah's Messenger (ﷺ)? I (Abu Huraira) said: Yes. He said this again and again, and I said: Have I read Torah? This hadith has been transmitted on the authority of Ishaq with a slight variation of wording.

حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، وَمُحَمَّدُ بْنُ الْمُثَنَّى الْعَنَزِيُّ، وَمُحَمَّدُ بْنُ عَبْدِ اللَّهِ الرُّزِّيُّ، جَمِيعًا عَنِ الثَّقَفِيِّ، - وَاللَّفْظُ لاِبْنِ الْمُثَنَّى - حَدَّثَنَا عَبْدُ الْوَهَّابِ، حَدَّثَنَا خَالِدٌ، عَنْ مُحَمَّدِ بْنِ، سِيرِينَ عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ فُقِدَتْ أُمَّةٌ مِنْ بَنِي إِسْرَائِيلَ لاَ يُدْرَى مَا فَعَلَتْ وَلاَ أُرَاهَا إِلاَّ الْفَأْرَ أَلاَ تَرَوْنَهَا إِذَا وُضِعَ لَهَا أَلْبَانُ الإِبِلِ لَمْ تَشْرَبْهُ وَإِذَا وُضِعَ لَهَا أَلْبَانُ الشَّاءِ شَرِبَتْهُ ‏"‏ ‏.‏ قَالَ أَبُو هُرَيْرَةَ فَحَدَّثْتُ هَذَا الْحَدِيثَ كَعْبًا فَقَالَ آنْتَ سَمِعْتَهُ مِنْ رَسُولِ اللَّهِ صلى الله عليه وسلم قُلْتُ نَعَمْ ‏.‏ قَالَ ذَلِكَ مِرَارًا ‏.‏ قُلْتُ أَأَقْرَأُ التَّوْرَاةَ قَالَ إِسْحَاقُ فِي رِوَايَتِهِ ‏"‏ لاَ نَدْرِي مَا فَعَلَتْ ‏"‏ ‏.‏

References2 variants
In-Book Reference
Book 55, Hadith 79
USC-MSA web (English) reference
Book 42, Hadith 7135 (deprecated numbering scheme)