Арабская пословица

إنَّ الجوَادَ عَيْنُهُ فُرَارُهُ
Сущность скакуна (определяется) по его зубам!
Furaar, firaar or faraar, looking into a (horse’s) mouth to discover (his) age. Clearing up by investigation. ‘aynuhu faraaruhu, his eye for his tooth, i.e. from his exterior you may judge of his interior (p.931).