Whoever hires, employs or engages any child to commit an offence shall be punished with imprisonment of either description which shall not be less than three years but which may extend to ten years, and with fine; and if the offence be committed shall also be punished with the punishment provided for that offence as if the offence has been committed by such person himself. Explanation.—Hiring, employing, engaging or using a child for sexual exploitation or pornography is covered within the meaning of this section.