Midrasch zu Bereschit 24:31

Another Matter: "When You shall enter into the land of Cana'an [the land of Israel]..." (ויקרא יד, לד) There are seven Nations [in Cana'an] and you [only] mention the land of Cana'an. Our sages said it alluded to that what H'am (the father of Cana'an) Castrated him (Noach) and Cana'an was stricken - also here Yisrael sins and the land is caused to be cursed. Rabbi Eliezer Son of Yaakov and Rabanan / our sages [differ in opinions] Rabbi Eliezer says [it is called such] "since Cana'an was the father of all of them [the 6 other nations, who were in Cana'an / Israel when Yehoshua went to conquer them.] This what it says [regarding it] (Bereshit 10:15) "And Cana'an gave birth to Tzidon, his first born and Het. And our sages say [it is called such] for they are all merchants - like it says in (Yeshaya 23,8) "That their merchants are princes like the Naneah / movers - the honored of the land. Rabbi Yossi Son of Dosa said - Eliezer is Cana'an - and since he served that righteous one [Avraham Avinu / our forefather] he went out from the category of being cursed to and came into the category of being blessed. - Thus is what is written (Bereshit 9:25) "And he [Noach] said Cursed is Cana'an" [the son of Noach's son H'am] and it is written Come blessed one of Hash-m"...