According to search-discovered classical Islamic scholarship, the Wasiyyah (Islamic will or bequest) is a legal instrument allowing a Muslim to gift up to one-third of their estate to non-heirs, an act that takes effect after death. The initial Quranic guidance in Surah Al-Baqarah 2:180 prescribed making a will for parents and relatives as an obligation. However, as explained by the consensus of classical jurists like Ibn Kathir and Al-Qurtubi, this ruling was later specified and refined by the detailed verses of inheritance (Mirath) in Surah An-Nisa. This legislative progression established the final framework where the Wasiyyah became a recommended act, distinct from the mandatory fixed shares of inheritance. A key hadith, "There is no bequest for an heir," clarifies that the Wasiyyah cannot be used to alter the divinely ordained shares of legal heirs. Therefore, the Wasiyyah serves as a vital tool for charity, supporting relatives not covered by Mirath, and fulfilling final obligations, forming a complementary part of the comprehensive Islamic system of estate planning.