Gratuitous

[Justin Bieber]

Gratuitous means to be given something, or to receive something, without payment or obligation.
It can also mean an action carried out or executed without cause, or an unjustified action.
It is also used in Law, where something is made or given, without receiving any value in return, as in a gratuitous agreement.

[Hina Muqadas]

Given without an equivalent or recompense; conferred
without valuable consideration; granted without pay, or without claim
or merit; not required by justice.