Empathetic joy

Feeling of joy, rapture, elation arising from seeing the joy, happiness, and the well-being of others.

Empathetic joy is the third of the four immeasurable states or sublime mental states, together with benevolence, compassion and equanimity, which radiate in immeasurable infinite quantity when one attains paññā wisdom.

P & S: muditā, V: hỷ