Surah Al-Baqarah 2:101

وَلَمَّا جَآءَهُمْ رَسُولٌ مِّنْ عِندِ ٱللَّهِ مُصَدِّقٌ لِّمَا مَعَهُمْ نَبَذَ فَرِيقٌ مِّنَ ٱلَّذِينَ أُوتُوا۟ ٱلْكِتَـٰبَ كِتَـٰبَ ٱللَّهِ وَرَآءَ ظُهُورِهِمْ كَأَنَّهُمْ لَا يَعْلَمُونَ

And when a messenger from Allāh came to them confirming that which was with them, a party of those who had been given the Scripture threw the Scripture of Allāh [i.e., the Torah] behind their backs as if they did not know [what it contained].

Translation: Saheeh International

Tafsir

When there came to them a messenger from God namely Muhammad (s) confirming what was with them a party of them who were given the Scripture have cast away the Scripture of God that is the Torah behind their backs that is to say they have not acted according to what it said about belief in the Messenger and otherwise; …

Excerpt from Tafsir al-Jalalayn, commentary on 2:101, via Quran.com. The reader has the full commentary and 9 more tafsirs.