 Sir was incorporated into the Ottoman Empire in 1517 with all of Palestine, and in 1596 it appeared in the tax registers as being in the "Nahiya" of "Bani Sa'b", part of Nablus Sanjak.It had a population of 10 households, all Muslim.The villagers paid a fixed tax-rate of 33.3% on agricultural products, including wheat, barley, summer crops, olive trees, occasional revenues, goats and/or beehives, and a customary tax on subjects in Nablus region; a total of 7,000 akçe.