I dont seem to understand what you are trying to ask me, but i wll try my best
So far to my understanding, he commented them on there obedience because they did not obey god by corrupting the Torah as indicated in the Bible
GOD Almighty Said: "'How can you say, "We [the Jews] are wise, for we have the law of the LORD," when actually the lying pen of the scribes has handled it falsely?' (From the NIV Bible, Jeremiah 8:8)"
See Also Deuteronomy 31:25-29 where Moses peace be upon him predicted the corruption/tampering of the Law (Bible) after his death.
The Book of Moses predicted that the Law (Bible) will get corrupted. The Book of Jeremiah which came approximately 826 years after did indeed confirm this corruption.
Also in the Hadith you also read "but you have read into Scripture things that are not there and you have rejected God's covenant with you" as you can see, this verse implies it is not AUthentic. I think its talks and relates to Obidience and Authencity, i hope i answered your questions.