deu - [IC] About how it is possible it is said that—if those of the good religion (i.e. the believers) do not always proceed as in the teaching(s) of Avesta (and) Zand which has been said (i.e. proclaimed)—then one must abandon the religion.
deu - [West1882] ... it is stated as regards how it is proper that, when on account of those of the good religion they always proceed just as is mentioned in the Zand teaching of the Avesta,16 it will then be necessary that they shall abandon the religion.