Mischief by fire or explosive substance with intent to destroy house, etc

Whoever commits mischief by fire or any explosive substance, intending to cause, or knowing it to be likely that he will thereby cause, the destruction of any building which is ordinarily used as a place of worship or as a human dwelling or as a place for the custody of property, shall be punished with ¹[imprisonment for life], or with imprisonment of either description for a term which 4 [shal1 not be less than three years nor more than] ten years, and shall also be liable to fine.