The Palastinians aren’t the historical Palastinians. They took the name for pure propaganda purposes. To fool uniformed people they have an age old claim to the land.
The Quran says read the Bible. Literally it does. So if your god will violate an oath he said on himself, to Abraham, Isaac & Jacob. Then you have no assurance he will uphold a promise he made to Muslims. He gave not only the land Israel and the “Palastinians” possess, but even MORE LAND. Eventually, even more land will be given to Israel from the God of Abraham. Or your god’s promises are worthless