Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) says: The people at the lower end of the water are rulers over those at the upper end.
Imam Tabarani recorded it in al-Mu'jam al-Kabir, and its chain is munqati' (broken). (Allamah Haythami says:) I say: The hadith narrated from Sayyiduna Ubadah (may Allah be pleased with him), which Imam Ahmad recorded, will come in the chapter on rulings (al-Ahkam), if Allah wills.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب البيوع / 6810