question #3 Sahih al-Bukhari 5590, Book 74, Hadith 16 : What actions are highlighted as being wrongly considered permissible by some followers in the hadith?

that he heard the Prophet (ﷺ) saying, “From among my followers there will
be some people who will consider illegal sexual intercourse, the
wearing of silk, the drinking of alcoholic drinks and the use of
musical instruments, as lawful. And there will be some people who will
stay near the side of a mountain and in the evening their shepherd
will come to them with their sheep and ask them for something, but
they will say to him, ‘Return to us tomorrow.’ Allah will destroy them
during the night and will let the mountain fall on them, and He will
transform the rest of them into monkeys and pigs and they will remain
so till the Day of Resurrection.”