Those to whom We have given the Book recite it with its (2:121)

﴿الَّذِينَ آتَيْنَاهُمُ الْكِتَابَ يَتْلُونَهُ حَقَّ تِلَاوَتِهِ أُولَٰئِكَ يُؤْمِنُونَ بِهِ ۗ وَمَن يَكْفُرْ بِهِ فَأُولَٰئِكَ هُمُ الْخَاسِرُونَ﴾
[ البقرة: 121]

2:121 Those to whom We have given the Book recite it with its true recital. They [are the ones who] believe in it. And whoever disbelieves in it - it is they who are the losers.

The Qur’ān mentions a group from the People of the Scripture who know the revealed texts they have been given and follow them properly.
They find in these scriptures signs pointing to the truth of the Prophet Muhammad ( peace be upon him ); and because of this they immediately have faith in him.
Another group sticks to its disbelief, and for them is loss.

Those (who embraced Islam from Bani Israel) to whom We gave the Book [the Taurat (Torah)] [or those (Muhammad's Peace be upon him companions) to whom We have given the Book (the Quran)] recite it (i.e. obey its orders and follow its teachings) as it should be recited (i.e. followed), they are the ones that believe therein. And whoso disbelieves in it (the Quran), those are they who are the losers. (Tafsir Al-Qurtubi. Vol. 2, Page 95).

phonetic Transliteration

Allatheena ataynahumu alkitaba yatloonahu haqqa tilawatihi olaika yuminoona bihi waman yakfur bihi faolaika humu alkhasiroona

Abdullah Yusuf Ali - Translation

Those to whom We have sent the Book study it as it should be studied: They are the ones that believe therein: Those who reject faith therein,- the loss is their own.

Safi-ur-Rahman al-Mubarakpuri

Those to whom we gave the Book recite it as it should be recited (Yatlunahu Haqqa Tilawatihi) they are the ones who believe therein. And whoso disbelieve in it, those are they who are the losers.) Ibn Jarir said, "Allah said,

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