Is it obligatory for a seller of artificial leather raw materials to inquire about how they will be used in the manufacture of products that may be used for adornment, such as women's shoes and handbags, in order to avoid profiting from something dubious, and upon whom does the responsibility lie in this case?

There is no objection to selling hides and benefiting from what is earned from them, and the seller is not obligated to inquire about how they will be used. The commodity is permissible and can be used for permissible and impermissible purposes, and it is predominantly used for permissible purposes. Al-Shawkani states that selling something that has a lawful benefit is permissible, while selling something that has no benefit or an unlawful benefit is not permissible. If a thing can be used for both lawful and unlawful purposes, and the seller does not know that the buyer will use it for unlawful purposes, then selling it is permissible. If the hides are used for impermissible purposes, then the sin is on the manufacturer or the merchant, not on the seller.