Sarah lived to be 127 years old.
References for Genesis 23:1
She died at Kiriath Arba. Kiriath Arba is also called Hebron. It's in the land of Canaan. Sarah's death filled Abraham with sorrow. He went to the place where her body was lying. There he sobbed over her.
Then Abraham got up from beside his dead wife. He spoke to the Hittites. He said,
"I'm an outsider. I'm a stranger among you. Sell me some property here as a place for a family tomb. Then I can bury my wife's body.
The Hittites replied to Abraham,
"Sir, listen to us. You are a mighty prince among us. Bury your dead wife in the best of our tombs. None of us will refuse to sell you his tomb for burying her."
Then Abraham bowed down in front of the Hittites, the people of the land.
He said to them, "If you are willing to let me bury my dead wife, then listen to me. Speak to Zohar's son Ephron for me.
Ask him to sell me the cave of Machpelah. It belongs to him and is at the end of his field. Ask him to sell it to me for the full price. I want it as a place to bury my dead wife among you."
Ephron the Hittite was sitting there among his people. He replied to Abraham. All of the Hittites who had come to the gate of his city heard him.
"No, sir," Ephron said. "Listen to me. I will sell you the field. I'll also sell you the cave that's in the field. I will sell it to you in front of my people. Bury your wife."
Again Abraham bowed down in front of the people of the land.
He spoke to Ephron so they could hear him. He said, "Please listen to me. I'll pay the price of the field. Accept it from me. Then I can bury my dead wife there."
Ephron answered Abraham
"Sir, listen to me. The land is worth ten pounds of silver. But what is that between you and me? Bury your wife."
Abraham agreed to Ephron's offer. He weighed out for him the price he had named. The Hittites there had heard it. The price was ten pounds of silver. Abraham measured it by the weights that were used by those who bought and sold.
So Ephron sold his field in Machpelah near Mamre to Abraham. He bought the field and the cave that was in it. He also bought all of the trees that were inside the borders of the field. Everything was sold
to Abraham as his property. He bought it in front of all of the Hittites who had come to the gate of the city.
Then Abraham buried the body of his wife Sarah. He buried her in the cave in the field of Machpelah near Mamre in the land of Canaan. Mamre is at Hebron
So the field and the cave that was in it were sold to Abraham by the Hittites. The property became a place for his family tomb.