Sayyiduna Usayd bin Zuhayr bin Rafi' bin Khadij (may Allah be pleased with him) narrates from the Prophet (peace and blessings be upon him) concerning muzara'ah that each of them used to stipulate three channels, the qusarah (the grain left in the ear after threshing) and what the small stream irrigates, so the Prophet (peace and blessings be upon him) forbade that.
The Shaykh said: Whoever holds this view claims that the reports in which the prohibition of renting (land) for a half, a third or a quarter is mentioned are only because of the invalid conditions they used to attach to it. Some narrators fell short in mentioning them and some mentioned them, and the prohibition relates to them alone, not to anything else.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المزارعة / 11739