ma huel iuh ye in amoyollo.

Headword: 
ma huel iuh ye in amoyollo.
Principal English Translation: 

be certain, understand this (a command to a group) (see Molina); be sure about that (Siméon)

Orthographic Variants: 
mauel yuhye in amoyollo, mahuel yuhye in amoyollo, ma huel yuh ye in amoyollo
Alonso de Molina: 

mauel yuhye in amoyollo. sed ciertos, o tened entendido.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 54r. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in Spanish: 

ma yuh ye in amoyollo = estad seguros de ello
Rémi Siméon, Diccionario de la lengua náhuatl o mexicana (Mexico: Siglo XXI, 1988), 241.