What is the ruling on a wife who refuses her husband's expenses and returns them to him, justifying that with disputes unrelated to the expenses, and what should the husband residing in another country do?

Marital disputes occur frequently, and wise people strive to resolve them with wisdom to close the door on Satan. It is authentically reported in Sahih Muslim that Iblis boasts about those who separate a man from his wife.

Our advice is to speak with your wife to understand the reason for her rejection of the maintenance payment, to apologize to her if you have wronged her, and to clarify matters if she has misunderstood them. Be sure to establish foundational principles for interaction to ensure the stability of your marital life by overlooking shortcomings and each party fulfilling their duty.

And if your agent has delivered the maintenance payment to her, then your obligation is discharged thereby; for the transfer of ownership does not require offer and acceptance, but rather it is sufficient to hand over the money with the intention of fulfilling what is due, such as placing it in her hands.