To get a piece of land for the nation,blood has to be shed

They said: "O Mûsa (Moses)! In it (this holy land) are a people of great strength, and we shall never enter it, till they leave it; when they leave, then we will enter

Two men of those who feared (Allâh and) on whom Allâh had bestowed His Grace (they were یوشع وکالب yusha and Kâlab) said: "Assault them through the gate, for when you are in, victory will be yours, and put your trust in Allâh if you are believers indeed."

They said: "O Mûsa (Moses)! We shall never enter it as long as they are there. So go you and your Lord and fight you two, we are sitting right here."

He [Mûsa (Moses)] said: "O my Lord! I have power only over myself and my brother, so separate us from the people who are the Fâsiqûn (rebellious and disobedient to Allâh)!"

(Allâh) said: "Therefore it (this holy land) is forbidden to them for forty years; in distraction they will wander through the land. So be not sorrowful over the people who are the Fâsiqûn (rebellious and disobedient to Allâh)."

Al maeda 22-26