Halakha Imamat 26:15: Mishneh Torah, Torah Study & Kitzur Shulchan Arukh

It is a grievous sin to disgrace the wise or to hate them. The destruction of Jerusalem did not come about until the disciples of the wise in its midst were disgraced, even as it is said: "But they mocked the messengers of God, and despised His words, and scoffed at His prophets" (II Chron. 36.16), as if saying, they despised those who instructed His words. Such is also the meaning of the words of the Torah in saying: "Thus if ye so reject My statutes" (Lev. 26.16), those who instruct My statutes ye so reject. He who disgraces the wise has no share in the World to Come and is in the category of such of whom it is said: "Because he hath despised the word of the Lord" (Num. 15.31).¹⁰Shabbat, 119b; Sanhedrin, 99a. C. G.

It is a grave sin to humiliate talmidei chachomim or to hate them. Jerusalem was not destroyed until they began to humiliate talmidei chachomim, as it is said, "But they mocked the messengers of God and disgraced His words, and scoffed at His prophets."³Chronicles II 36:16. That is to say they humiliated those who teach His words. This is also what the Torah says, "And if you will despise My statutes,"⁴Leviticus 26:15. [that is to say] "If you despise those who teach My statutes." And anyone who humiliates Torah scholars has no portion in the World to Come, and he is included among those of whom it is said: "For He has denigrated the word of Adonoy."⁵Numbers 15:31. It is forbidden to make servile use of one who studies Torah laws.⁶And certainly not to do so to a student of the Talmud. (Rema 243:6)