What is the most authentic book that deals with the signs of the Day of Judgment and the battles?
The most authentic books in this regard that come after the Qur'an are: (Part No. 3; Page No. 140) Sahih
Abu Dawud, Sunan
Al-Tirmidhy, and Sunan
Ibn Majah. The most comprehensive books in this regard are Al-Nihayah that was written by
Ibn Kathir and Ithaf Al-Jama`ah fi Akhbar Al-Fitan wa Al-Malahim wa Ashrat Al-Sa`ah that was written by Shaykh
Hammud ibn `Abdullah Al-Tuwayjiry. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.