TINJAUAN HUKUM EKONOMI SYARIAH TERHADAP PRAKTIK SEWA MENYEWA SAWAH DENGAN SISTEM BAYAR MUSIM PANEN (STUDI KASUS DI DESA KEDUNGSARI-SRUMBUNG-MAGELANG)NIM.: 22103080071Naila Tammi MaulidiaauthorThe practice of leasing rice fields using a harvest-season payment system in Kedungsari Village, Srumbung District, Magelang Regency, is generally conducted verbally based on mutual trust. However, the exact nominal of the rental fee (ujrah) is often determined only after the harvest is sold. This situation potentially causes losses among the parties and contradicts the principle of clarity (al-wuḍūḥ) in Islamic transactions (muamalah). This study aims to analyze the forms of losses borne by the parties and review the validity of this practice based on Sharia Economic Law and the Compilation of Sharia Economic Law (KHES). This study addresses two concise questions: (1) what losses are borne by the parties? and (2) how is the practice assessed under Sharia Economic Law? This is a field research with an empirical-juridical approach. Primary data were collected through observation, documentation, and interviews with 20 informants consisting of landowners, tenant farmers, traditional leaders, and religious figures. Data analysis was conducted using an inductive-qualitative method applying the theories of Ijarah, KHES, Muzara’ah/Mukhabarah, ‘urf, and Default (Wanprestasi). The results indicate that: 1) Both parties suffer losses due to the uncertainty of the contract. Landowners (mu’jir) experience material losses in the form of delayed cash flow and income uncertainty, along with immaterial losses such as the psychological burden of debt collection. Conversely, tenant farmers (musta’jir) suffer material losses from lost capital and labor during crop failure, accompanied by anxiety due to lingering rental debt. 2) The Sharia Economic Law review shows that while delaying rental payments until after the harvest is permissible, determining the rental amount based on harvest fluctuations contains elements of gharar (uncertainty) that invalidate the Ijarah contract. The community's tolerance is considered ‘urf sahih (valid custom), but leaving the nominal unclear is ‘urf fasid (invalid custom). The sharia-compliant solution is to clarify the type of contract from the beginning, supported by a written agreement: establishing a fixed nominal upfront for an Ijarah contract, or switching to a profit-sharing contract (Muzara’ah/Mukhabarah) with a clear distribution ratio.297.273 Ekonomi Islam / Fiqih Muamalah2026-08-31UIN SUNAN KALIJAGA YOGYAKARTA;FAKULTAS SYARI’AH DAN HUKUMThesis