Samdech Preah Mahaghosananda is a Buddhist spiritual teacher who always teaches three essential Dhammas to Buddhists, especially Cambodian Buddhists: Truth, Patience, and Gratitude. These three Dhammas are called Trikod Dhamma.
He is the only one Cambodian monk who most famously devotes for teaching Trikod Dhamma and pilgrimaging for Cambodia Peace.
Whenever he goes, he talks about local and international peace and gives three fruits to the people he meets. The first fruit is to live with Truth. The second fruit is to live with Patience. The third fruit is to live with Gratitude.
These are the top Dhammas of all others.