ixtlapancayeualiztli. cisma. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 48r. col. 2. Thanks to Joe Campbell for providing the transcription.
Attestations from sources in Spanish:
cisma, división Rémi Siméon, Diccionario de la lengua náhuatl o mexicana, 230.