Masalah warisan dan Hukum Kewarisan merupakan masalah yang sangat penting baik ditinjau dari sudut Hukum Perdata Indonesia maupun dilihat dari Hukum Islam. Betapa pentingnya Hukum Kewarisan ini hingga dapat menimbulkan perselisihan dalam masyarakat. Bagaimana jika kakek mewaris bersama-sama dengan saudara, dan bagaimanakah perbandingan antara Hukum Kewarisa Islam dengan Hukum Kewarisan Perdata terkait kakek yang mewaris bersama saudara. Timbulnya pertanyaan-pertanyaan tersebut dikarenakan minimnya pengetahuan rakyat Indonesia akan Hukum Kewarisan yang berlaku di Indonesia. Namun pada dasarnya baik Hukum Kewarisan Islam dan Hukum Kewarisan Perdata sama- sama melindungi kepentingan untuk kakek.

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Abstract
The Issues of inheritance and Inheritance Law is an extremely important both in terms of Indonesian Civil Code as well as views of Islamic law. The proof of how important Inheritance Law is, it can lead to discord in society. What if my grandfather inherited together with the brothers and sisters, and how the comparison between Islamic Inheritance Law with Civil Code Inheritance Law associated grandfather who inherit together with brothers and sisters. The emergence of these questions due to lack of knowledge of the people of Indonesia regarding the Inheritance Law which prevailing in Indonesia. But basically both Islamic Inheritance Law and Civil Code Inheritance Law equally protect the interests for the grandfather.