Used to refer to something that belongs to or is connected with the person being addressed.

आपका

English Usage: The decision is yours to make.

Hindi Usage: निर्णय आपका लेने के लिए है।

In a loyal, constant, or unwavering manner.

वफादारी से

English Usage: She served her country faithfully for many years.

Hindi Usage: उसने अपने देश की वफादारी से कई वर्षों तक सेवा की।