This book explains the first chapter of the Qur'an i.e. "Al-Fatihah". It's a summary of numerous classical commentaries of the Qur'an e.g. at-Tabari, as-Sama'ni, al-Baghawi, as-Zamakhshari, ibn 'Atiyyah, ibn al-Jawzi, ar-Razi, al-Qurtubi, ibn al-Qayyim, ibn Kathir, as-Suyuti, al-Alusi, ash-Shawkani, as-Sa'di, ash-Shanqiti and many others. Prepared and translated by Abu Rumaysah. I really understand "Al-Fatihah" and transform my prayer. Strongly recommended!