GEN856 The Rabbis taught: “If one were married to a woman for ten years and she had no children, he should divorce her and provide her with the amount stipulated in her marriage contract,” for perhaps it has not been granted him to have children with her.  And though there is no proof for this, there is an allusion to it: [this verse]. Why emphasize “the land of Canaan”? To teach us that the years spent outside Eretz Yisroel [Canaan] do not enter into the ten years mentioned in this connection” [for one might be granted children through the merit of living in Eretz Yisroel] Yevamot 64a TEMIMAH-GEN 70