Labour of love

What is the origin of the idiom "labour of love" and when to use it?

The phrase "labour of love" is derived from the combination of "labour," which refers to work or effort, and "love," which signifies deep affection or passion. It is used to describe a task, project, or activity that requires substantial effort and hard work, but is pursued willingly and with great passion. It implies that the motivation behind the work is driven by love, personal fulfillment, or a strong sense of dedication rather than for monetary gain or external rewards.