15. Michiqui atica yoan ytech tetl cenca tlaquauac vnpa uallauh yn matlatzinco.
15. They rub them with water and mounted in a very hard stone that comes from the country of Matlatzinca [district of Toluca].
16. Ypampa ca uel monoma namiqui, yniuh chicauac tecpatl noyuh chicauac yn tetl, ynic monepanmictia.
16. And because these two stones are companions, the one to the other, as the silex is very hard, so the stone is hard, they kill one another (the one kills the other).
17. Çatepan mixteca yca teoxalli yoan motemetzhuia yca ezmellil.
17. Then they facet and polish them by means of emery.
18. Auh çatepan yc mocencaua yc mopetlaua, yn quetzalotlatl.
18. And they finish and polish them with bamboo.
19. Ynic quicuecueyotza quitonameyomaca.
19. In this way they make them scintillate and give to them a luster like the rays of the sun.