Malik related to me from Ibn Shihab from Salim ibn Abdullah from his father that Umar ibn al-Khattab said, "Whoever revives dead land, it belongs to him."

Malik said, "That is what is done in our community."
Muwatta Malik Book 36, Hadith 38
← Previous Hadith Yahya related from Malik from Hisham ibn Urwa from his father that the Messenger of Allah, may Allah bless him and grant him peace, said, "If anyone revives dead land, it belongs to him, and the unjust root has no right."

Malik explained, "The unjust root is whatever is taken, or planted without right."

Muwatta Malik Book 36, Hadith 37 Next Hadith → Yahya related to me from Malik from Abdullah ibn Abi Bakr ibn Muhammad ibn Amr ibn Hazm that he heard that the Messenger of Allah, may Allah bless him and grant him peace, said about the flood-channels of Mahzur and Mudhaynib (in Madina), "Dam them systematically, so that the water is diverted into each property in turn up to ankle level, starting upstream."

Muwatta Malik Book 36, Hadith 39