γέλως ἄκαιρος κλαυμάτων παραίτιος → ill-timed laughter causes tears (Menander)
YAv. airišta, unimpaired, Skt. ariṣṭa + APers. zana (comp.), race, fr. *zan, to give birth, YAv. zan, Skt. jan; of unimpaired race.