The Book of Transactions (Kitab Al-Buyu`)
Muslim :: Book 10 : Hadith 3725
Jabir (Allah he pleased with him) reported: I heard Allah's Apostle (may peace be upon him) as saying: He who has (surplus) land should donate it (to others), or lend it. This hadith has been narrated on the authority of A'mash with the same chain of transmitters, but with a slight change of words.