What is the ruling on giving one hundred dollars to an airline employee in exchange for her bringing a ticket and an invoice to be submitted to the employer to benefit from the original price of the ticket, with the employer's knowledge, and what is the ruling on disposing of the money gained from that if it is unlawful?

What the employee does by providing fictitious invoices in exchange for unlawful money is forbidden, because it is lying and forgery. It is not permissible to assist her or invite her to it, for he who guides to evil is like its perpetrator. Whoever wishes to obtain a ticket allowance must negotiate with his employer or purchase a ticket and return it, provided that airline companies are not harmed. If the employer stipulates actual travel, it is not permissible to deceive them, because what they pay is a conditional gift. Ibn Baz was asked about falsifying family relocation allowance receipts and he replied that it is not permissible because it is acquiring money through lying and deception.