to help others because one has helped oneself (see Molina)
Alonso de Molina:
macoa. nite. (pret. onitemacouh.) ayudar a otro porque me ayude. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 50v. col. 2. Thanks to Joe Campbell for providing the transcription.