Keep in mind when the "Promise" was made to Abraham that "Through Thy Seed Shall All Nations of the Earth be Blessed", this promised was stated to come through his son Isaac, no
such promise was ever made through Ishmael, so Mohammad was trying to justify a "Tangent" to the "Word Of God" . This promise was fulfilled through the coming of the Lord & Savior, Jesus, The Son of God. Israel "Blew It" when they had him nailed to a Roman Cross. Only those who believed on & accepted the commandments of Jesus received benefit of the blessings, but then they were no longer Israelites but Christians.

You will of course not stand in Judgement on my word, but on the Word of God, which is Truth.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra