Ma'anar ƙamus na kalmar "lease" yarjejeniya ce ta kwangila tsakanin mai haya (mai dukiya) da mai haya (an haya ko mai haya) wanda ke ba wa mai haya damar yin amfani da kadarorin na wani takamaiman lokaci don musanyawa biyan kudin haya. Yarjejeniyar hayar yawanci ta ƙunshi sharuɗɗa da sharuɗɗa kamar tsawon lokacin haya, adadin hayar, da kuma nauyin da ya rataya a wuyan bangarorin biyu yayin lokacin hayar.