Musannaf Ibn Abi Shaybah 30992 — Book of the Judgments

Sayyiduna Jabir (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) ruled for pre-emption (shuf'ah) in every share that has not been divided, whether in the form of a house or a garden: it is not permissible for the owner to sell it without the permission of his partner. If the partner wishes, he will take it, and if he wishes, he will leave it. If the owner sells it without informing his partner, the partner has the greater right to that share.