This is from the fourteen mindfulness trainings from Thich Nhat Hanh, also called Thay. You can see them and more related information on the Deer Park Monastery website.
The Thirteenth Mindfulness Training: Generosity
Aware of the suffering caused by exploitation, social injustice, stealing and oppression, I am committed to cultivating loving kindness and learning ways to work for the well-being of people, animals, plants and minerals. I will practice generosity by sharing my time, energy and material resources with those who are in need. I am determined not to steal and not to possess anything that should belong to others. I will respect the property of others, but will try to prevent others from profiting from human suffering or the suffering of other beings.