Is it permissible to work in video editing with the editor knowing that the manager will add music to it after he finishes editing, and does the editor bear the sin of listening to music in this case?

Allah has forbidden aiding in sin, based on His saying: ﴿And do not cooperate in sin and aggression﴾. Among the forms of forbidden aid is handing over something permissible to a person when it is highly likely that he will use it for sin. Thus, it is not permissible to sell or sew clothing for someone who will use it for disobedience or injustice, nor anything permissible if it is known that it will be used for disobedience. This varies according to places, times, and circumstances. Every sale, rental, or exchange that aids in disobeying Allah Almighty, such as selling weapons during times of strife or to disbelievers, or renting a house to someone who will establish a market of sin in it, and likewise selling candles to someone who will use them for disobeying Allah, all of these are forbidden. Therefore, it is not permissible for you to participate in producing anything that helps this person spread forbidden musical instruments, as this constitutes aiding him in his sin.