If there is a certain distinction as to voice in the forms of a non-indicative mood, the same distinction is also represented in the given language in the forms of the indicative mood.
Standardized
IF there are voice distinctions in a non-indicative mood, THEN they are made in the indicative mood as well.
Cf. ##273, 434, which are about the distribution of person and number, aspect, and tense distinctions between indicative and non-indicative moods.