וַיָּבֹ֙אוּ֙ בְּנֵ֣י יִשְׂרָאֵ֔ל לִשְׁבֹּ֖ר בְּת֣וֹךְ הַבָּאִ֑ים כִּֽי־הָיָ֥ה הָרָעָ֖ב בְּאֶ֥רֶץ כְּנָֽעַן׃
And the sons of Israel came to buy among those that came; for the famine was in the land of Caanan.
Read halakhic rulings (Jewish law) on Genesis 42:5: and classical halakhic sources.