Narrated Aslam: 'Umar said, "Were it not for those Muslims who have not come to existence yet, I would have distributed (the land of) every town I conquer among the fighters as the Prophet distributed the land of Khaibar."
— Sahih Bukhari, Volume 4, Book 53: One-fifth of Booty to the Cause of Allah (Khumus), Hadith #354