The right of pre-emption can be exercised in which of the following situations ?

Pre-emption (shufa) is the right of a co-sharer, participator in appendages or neighbour to acquire property in preference to others, and it arises only on a sale of immovable property, typically to a stranger.

It does not arise on a gift, a waqf, a lease or a mortgage, nor on inheritance, so a gift to a family member and devolution on heirs do not attract it.