(108) باب الشَّرِكَةِ فِي الرِّبَاعِ
It was narrated that Jabir said:
"The Messenger of Allah ruled that pre-emption is to be given in everything that is shared in which the division is not clear, whether it is a house or a garden. It is not permissible to sell it before informing one's partner, who may take it or leave it, as he wishes. He (the share-owner) sells it without informing him, and then he has more right to it."
Reference: Sunan an-Nasa'i 4701
In-book reference: Book 44, Hadith 253
English translation: Vol. 5, Book 44, Hadith 4705