The Prophet ﷺ said, "A group of Israelites were lost. Nobody knows what they did. But I do not see them except that they were cursed and changed into rats, for if you put the milk of a she-camel in front of a rat, it will not drink it, but if the milk of a sheep is put in front of it, it will drink it." I told this to Kaʿb who asked me, "Did you hear it from the Prophet ﷺ ?" I said, "Yes." Kaʿb asked me the same question several times.; I said to Kaʿb. "Do I read the Torah? (i.e. I tell you this from the Prophet.)"  

عَنِ النَّبِيِّ ﷺ قَالَ فُقِدَتْ أُمَّةٌ مِنْ بَنِي إِسْرَائِيلَ لاَ يُدْرَى مَا فَعَلَتْ وَإِنِّي لاَ أُرَاهَا إِلاَّ الْفَارَ إِذَا وُضِعَ لَهَا أَلْبَانُ الإِبِلِ لَمْ تَشْرَبْ وَإِذَا وُضِعَ لَهَا أَلْبَانُ الشَّاءِ شَرِبَتْ فَحَدَّثْتُ كَعْبًا فَقَالَ أَنْتَ سَمِعْتَ النَّبِيَّ ﷺ يَقُولُهُ قُلْتُ نَعَمْ قَالَ لِي مِرَارًا فَقُلْتُ أَفَأَقْرَأُ التَّوْرَاةَ  

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 Messenger of Allah 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.  

قَالَ رَسُولُ اللَّهِ ﷺ 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 ﷺ قُلْتُ نَعَمْ قَالَ ذَلِكَ مِرَارًا قُلْتُ أَأَقْرَأُ التَّوْرَاةَ قَالَ إِسْحَاقُ فِي رِوَايَتِهِ لاَ نَدْرِي مَا فَعَلَتْ  

"فُقدت أُمةٌ مِنْ بَنِي إِسْرَائيلَ لَا يُدْرى مَا فعلتْ وإِنِّى لَا أرَاهَا إِلَّا الفأْر ألا تَرَوْنَهَا إِذَا وُضِعَ لَهَا أَلْبَانُ الإِبِل لَمْ تَشْرَب، وَإِذَا وُضِعَ لَهَا أَلْبَانُ الشاة شَرِبَت".