mandala_built_piety_building_effect

mandala_built_piety_building_effect = {
	if = {
		limit = {
			NOT = { exists = scope:character }
		}
		county.holder = { save_scope_as = character }
	}
	scope:character = {
		#Liege paid for the building
		if = {
			limit = {
				root.county.holder = { is_independent_ruler = no }
				this = scope:character
				government_has_flag = government_is_mandala
			}
			add_piety = {
				value = minor_piety_value
				multiply = 1.5
			}
			root.county.holder = {
				if = {
					limit = { government_has_flag = government_is_mandala }
				}
				add_piety = {
					value = miniscule_piety_value
					multiply = 1.5
				}
			}
		}
		#Vassal paid for the building
		else_if = {
			limit = { 
				government_has_flag = government_is_mandala
				is_alive = yes
			}
			add_piety = {
				value = minor_piety_value
				multiply = 1.5
			}
		}
	}
}

As written in game/common/scripted_effects/tgp_mandala_scripted_effects.txt.