Narrated Thabit ibn Wadi'ah: We were in an army with the Messenger of Allah (ﷺ). We got some lizards. I roasted one lizard and brought it to the Messenger of Allah (ﷺ) and placed it before him. He took a stick and counted its fingers. He then said: A group from the children of Isra'il was transformed into an animal of the land, and I do not know which animal it was. He did not eat it nor did he forbid (its eating).
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا عَمْرُو بْنُ عَوْنٍ، أَخْبَرَنَا خَالِدٌ، عَنْ حُصَيْنٍ، عَنْ زَيْدِ بْنِ وَهْبٍ، عَنْ ثَابِتِ بْنِ وَدِيعَةَ، قَالَ كُنَّا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي جَيْشٍ فَأَصَبْنَا ضِبَابًا - قَالَ - فَشَوَيْتُ مِنْهَا ضَبًّا فَأَتَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم فَوَضَعْتُهُ بَيْنَ يَدَيْهِ - قَالَ - فَأَخَذَ عُودًا فَعَدَّ بِهِ أَصَابِعَهُ ثُمَّ قَالَ " إِنَّ أُمَّةً مِنْ بَنِي إِسْرَائِيلَ مُسِخَتْ دَوَابَّ فِي الأَرْضِ وَإِنِّي لاَ أَدْرِي أَىُّ الدَّوَابِّ هِيَ " . قَالَ فَلَمْ يَأْكُلْ وَلَمْ يَنْهَ .
sunnah.com