Is it permissible to bring in a printer that is under warranty for replacement, knowing that the company requires the use of expensive original ink, while there is a much cheaper generic ink available?
If the company stipulates that for the printer to be covered by the warranty, original ink must be used, then it is not permissible to deceive the company by submitting the printer for warranty service while using non-original ink. This is based on the hadith: "Muslims are bound by their stipulations, except for a stipulation that makes a halal thing haram, or a haram thing halal." The high prices of original inks do not justify such an action.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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