וְכָל־הָאָ֙רֶץ֙ בָּ֣אוּ מִצְרַ֔יְמָה לִשְׁבֹּ֖ר אֶל־יוֹסֵ֑ף כִּֽי־חָזַ֥ק הָרָעָ֖ב בְּכָל־הָאָֽרֶץ׃
E de toda a terra vinham ao Egito para comprar de Yosef, pois a fome era severa em toda a terra.
Zohar
R. Isaac said that the seven good kine symbolize the superior grades, and the seven lean and ill-favoured kine other and lower grades; the former of the side of holiness, and the latter of the side of defilement.