Buddhist

In Hinduism and Buddhism, [Dāna] is the practice of cultivating generosity. Ultimately, the practice culminates in one of the perfections (pāramitā): the perfection of giving - dāna-pāramitā. This can be characterized by unattached and unconditional generosity, giving and letting go.

Buddhists believe that giving without seeking anything in return leads to greater spiritual wealth. Moreover, it reduces the acquisitive impulses that ultimately lead to continued dukkha.

Native America

In many tribal cultures, giving away possessions is part of an entire way of life - one that creates powerful social bonds. Young children learn that it is not always easy to give things away. I remember my mother telling me that friends were coming to visit who had two young boys, and I would need to find two things to give them when they came. I remember standing in my room, looking around, trying to decide which things I could possibly give up. I also knew the rule that what I treasured the most was the first thing I must give away. By the time the friends arrived, I had selected my favorite shirt and favorite toy to give them so they would feel welcome.

When real generosity occurs, the recipient feels nurtured and healing begins. In the process of reciprocal generosity; the community reaches out to those in need; the person befriended responds with generosity as well.
Long, N. (1997). The therapeutic power of kindness. Reclaiming Children and Youth, 5, 242-246.

Christian

Generosity - A Test Of Love (2 Corinthians 8:8-9) 8 I am not commanding you, but I want to test the sincerity of your love by comparing it with the earnestness of others. 9 For you know the grace of our Lord Jesus Christ, that though he was rich, yet for your sake he became poor, so that you through his poverty might become rich.