Sales in which a Price is paid for Goods to be Delivered Later (As-Salam)
Bukhari :: Book 3 :: Volume 35 :: Hadith 458
Narrated Jabir bin 'Abdullah:
Allah's Apostle gave a verdict regarding Shuf'a in every undivided joint thing (property). But if the limits are defined (or demarcated) or the ways and streets are fixed, then there is no pre-emption.