can_be_hashishiyah

can_be_hashishiyah = {
	is_adult = yes
	NOR = { # Cannot be Temperate or already have a Substance Abuse trait.
		has_trait = drunkard
		has_trait = hashishiyah
		has_trait = temperate
	}

	NAND = { # Cannot be Zealous if faith views hashish as sinful
		rite = { trait_is_sin_rite = hashishiyah }
		has_trait = zealous
	}

	OR = {
		# Muslims always have access to Hashish...
		faith = {
			religion_tag = islam_religion
		}
		# Otherwise you must not be located in Europe (where Hashish was relatively unknown until modern times.)
		AND = {
			OR = {
				capital_province ?= {
					save_temporary_scope_as = my_home_province
				}
				liege.capital_province ?= {
					save_temporary_scope_as = my_home_province
				}
			}
			scope:my_home_province = {
				NOR = {
					geographical_region = world_europe
					geographical_region = world_asia
				}
			}
		}
	}
}

As written in game/common/scripted_triggers/00_stress_triggers.txt.