According to search-discovered classical Islamic scholarship, Jizya (الجزية) is a historically significant legal concept rooted in Quran 9:29, referring to a per-capita tax levied on specific non-Muslim subjects, known as dhimmis, living under the protection of an Islamic state. Classical jurists like Abu Yusuf and Al-Mawardi detail that this tax was obligatory only on able-bodied, adult males with financial means, in exchange for which the state guaranteed their security, property rights, freedom of religion, and, crucially, exempted them from compulsory military service. This system functioned as a legal contract of citizenship and protection. The linguistic analysis of its root 'jaza' (to recompense) supports its role as a payment for services rendered. While historically a primary tool of governance in caliphates, the vast majority of contemporary Islamic scholars and major declarations, such as the Marrakesh Declaration of 2016, affirm that Jizya is inapplicable in the modern context of nation-states, where citizenship entails equal rights and duties for all, including military service.