O Children of Israel, remember My favor, which I bestowed upon you, and fulfill your part of the covenant, that I fulfill My part of the covenant, and reverence Me.
You shall believe in what I have revealed herein, confirming what you have; do not be the first to reject it. Do not trade away My revelations for a cheap price, and observe Me. (2:40-41)
Muhammad want to convince the jews to join his religion.His strategy to show the jews he's not founding a new religion but he is the successor of the jewish prophets.
In this verse Muhammad accept the Jewish scripts-confirming what you have
So does it mean Muhammad confirm the Jewish script,that jews possess nowadays ?
Sura Al-Baqara is a Madinan sura which were revealed at Madina about the year 622 .
How can we know if the jewish scripts today are the scripts were in Muhammad time?
Today jewish and christians have the same verse of the Jewish scripts,Jewish call them-Tanach(http://en.wikipedia.org/wiki/Tanach) , christians call them - The old Testement(http://en.wikipedia.org/wiki/Old_Testement).
The Church in year 364 had the The Council of Laodicea,produced a list of books of the Old Testament that accepted as canon.(http://reluctant-messenger.com/council-of-laodicea.htm).
Another council was the Council of Rome in 382 gave us the complete list of the books of the Old Testament(http://en.wikipedia.org/wiki/Council_of_Rome).
Since 380 the jews and christians have the same books of the jewish scripts.
If Muhammad confirmed the jewish scripts in 622,So unless the jews and christians had a plot altogether to change the jewish scripts,the jewish scripts nowadays are the same scripts Muhammad confirmed!