How can one absolve oneself of responsibility for a dress and a shirt that have not been collected from the tailor after a 4-year delay in their delivery?

It is permissible to hire a tailor with the condition that a specific task be completed within a defined time. If the tailor fulfills the condition, he is entitled to the agreed-upon wage. Otherwise, he is entitled to the customary wage ( اجر المثل), provided it does not exceed the named wage.