Musannaf Ibn Abi Shaybah 22030 — A man who buys a house and builds

Khalid al-Hadhdha said: A man bought a house and built on it; then a man came forward who proved to have the right to it. So he wrote that the land and the building should be valued: if he wishes, he may pay the value of the building and take it; and if he refuses, he should hand over the land to the buyer at its value.