give_pilgrimage_reward_effect

give_pilgrimage_reward_effect = {
	#Short Pilgrimage reward
	if = {
		limit = { short_pilgrimage_trigger = yes }
		give_piety_reward_effect = { LENGTH = short }
		give_pious_type_reward_effect = yes
		give_worldly_type_reward_effect = yes
	}
	#Medium Pilgrimage reward
	else_if = {
		limit = { medium_pilgrimage_trigger = yes }
		give_piety_reward_effect = { LENGTH = medium }
		give_pious_type_reward_effect = yes
		give_worldly_type_reward_effect = yes
	}
	#Long Pilgrimage reward
	else_if = {
		limit = { long_pilgrimage_trigger = yes }
		give_piety_reward_effect = { LENGTH = long }
		give_pious_type_reward_effect = yes
		give_worldly_type_reward_effect = yes
	}
	#Very Long Pilgrimage reward
	else_if = {
		limit = { very_long_pilgrimage_trigger = yes }
		give_piety_reward_effect = { LENGTH = very_long }
		give_pious_type_reward_effect = yes
		give_worldly_type_reward_effect = yes
	}
	christian_saint_bone_tooltip_effect = yes
	pilgrimage_additional_reward_effect = yes
	# PAM - Spiritual fulfillment from completing a pilgrimage
	pilgrimage_sp_reward_effect = yes
	remove_character_flag = should_get_trait_piety
	# LEGITIMACY GAIN FOR ACTIVITY PARTICIPATION - PILGRIMAGE
	pilgrimage_activity_participation_legitimacy_effect = yes
	# Sacred Mountains tenet
	if = {
		limit = {
			rite = { rite_has_parameter = piety_from_hills_and_mountains_pilgrimages }
			location = {
				OR = {
					terrain = hills
					terrain = mountains
					terrain = desert_mountains
				}
			}
		}
		custom_tooltip = {
			text = piety_from_hills_and_mountains_pilgrimages_tt
			add_piety = medium_piety_gain
		}
	}
}

As written in game/common/scripted_effects/00_pilgrimage_effects.txt.