in the book fahrenheit 451 why did montag put some books in his fellow firemans house?

Question

i dont get it y montag put those books there i now it had to be for revenge but what did that fireman do to montag can somebody please help im confused:)

Answer 1

Here's why - planting (false) evidence (for a good cause.)

"Faber agrees to help Montag with his reading, and they concoct a risky scheme to overthrow the status quo. Faber will contact a printer and begin reproducing books, and Montag will plant books in the homes of firemen to discredit the profession and to destroy the machinery of censorship. Faber gives him a two-way radio earpiece (the “green bullet”) so that he can hear what Montag hears and talk to him secretly."

Answer 2

Fahrenheit 451 is the temperature that paper ignites on its own.