Narrated `Abdullah bin `Umar: Allah's Apostle said, "It is not permissible for any Muslim who has something to will to stay for two nights without having his last will and testament written and kept ready with him."
Hadith ReferenceSahih Bukhari / The Book of Wasaya (Wills and Testaments) / Hadith: 2738
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة