This episode discusses an apparent contradiction between two Rashis: In Bereishis 13:7 , he says that Lot had no right to take land in Eretz Yisrael because it wasn’t yet given to Avraham. But in Bereishis 23:4, he says that Avraham threatened to rightfully take land in Eretz Yisrael if they didn’t sell him a burial spot for Sarah.