Does scripture mention texts of Hindu or non-Hindu origin that would be sinful for Brahmins to read or prohibited by their Varna Dharma?
According to Manu Smriti reading "bad books" is a minor sin (UpapAtaka) that leads to loss of caste.
Brahmins or Dvijas should not read such books.
Manu Smriti 11.65. Neglecting to kindle the sacred fires, theft, non-payment of (the three) debts, studying bad books, and practising (the arts of) dancing and singing,
11.66. Stealing grain, base metals, or cattle, intercourse with women who drink spirituous liquor, slaying women, Sudras, Vaisyas, or Kshatriyas, and atheism, (are all) minor offences, causing loss of caste (Upapataka).
The original Sanskrit verse has "asat shAstra" which is translated as bad books. Probably it is talking about erotic literature.
But the literal meaning will be "false doctrines".