وَامِنُواْ بِمَا أَنزَلْتُ مُصَدِّقاً لِّمَا مَعَكُمْ
And believe in what I have sent down, confirming that which is with you (the Tawrah and the Injil),
meaning, the Qur'an that Allah sent down to Muhammad, the unlettered Arab Prophet, as bringer of glad tidings, a warner and a light. The Qur'an contains the Truth from Allah and affirms what was revealed beforehand in the Tawrah and the Injil (the Gospel).
Abu Al-Aliyah said that Allah's statement,
"means, `O People of the Book! Believe in what I sent down that conforms to what you have.' This is because they find the description of Muhammad recorded in the Tawrah and the Injil."
Similar statements were attributed to Mujahid, Ar-Rabi bin Anas and Qatadah.
Allah said,
وَلَا تَكُونُواْ أَوَّلَ كَافِرٍ بِهِ
and be not the first to disbelieve therein.
Ibn Abbas commented,
"Do not become the first to disbelieve in the Qur'an (or Muhammad), while you have more knowledge in it than other people."
Abu Al-Aliyah commented,
"`Do not become the first to disbelieve in Muhammad,' meaning from among the People of the Book, `after you hear that he was sent as a Prophet."'
Similar statements were attributed to Al-Hasan, As-Suddi and Ar-Rabi bin Anas.
Ibn Jarir stated that;
the Ayah (disbelieve therein 2;41) refers to the Qur'an, mentioned earlier in the Ayah,
بِمَا أَنزَلْتُ
(in what I have sent down (this Qur'an).
Both statements are correct because they are inter-related. For instance, whoever disbelieves in the Qur'an will have disbelieved in Muhammad, and whoever disbelieves in Muhammad will have disbelieved in the Qur'an.
Allah's statement,
أَوَّلَ كَافِرٍ بِهِ
(the first to disbelieve therein) means,
do not become the first among the Children of Israel to disbelieve in it, for there were people from Quraysh and the Arabs in general who rejected Muhammad before the People of the Book disbelieved in him.
We should state here that the Ayah is talking about the Children of Israel in specific, because the Jews in Al-Madinah were the first among the Children of Israel to be addressed by the Qur'an. Hence, their disbelief in the Qur'an means that they were the first among the People of the Book to disbelieve in it.
Allah's statement,
وَلَا تَشْتَرُواْ بِأيَاتِي ثَمَناً قَلِيلً
and buy not with My verses a small price,
means, "Do not substitute faith in My Ayat and belief in My Prophet with the life of this world and its lusts which are minute and bound to end."
Allah said,
وَإِيَّايَ فَاتَّقُونِ
and have Taqwa of Me and Me alone.
Ibn Abi Hatim reported that Talq bin Habib said,
"Taqwa is to work in Allah's obedience, on a light from Allah, hoping in Allah's mercy, and to avoid Allah's disobedience, on a light from Allah, fearing Allah's punishment."
Allah's statement,
وَإِيَّايَ فَاتَّقُونِ
(and fear Me and Me alone) means,
that Allah warns the People of the Book against intentionally hiding the truth and spreading the opposite of it, as well as, against defying the Messenger