Fiqh us Sunnah by Sayid (Sayyid) Sabiq.
VOL 1: Purification and Prayer
Description from the publisher:
Are you looking for a book that explains the basic practices of Islam in a comprehensive, detailed manner? This series of translations provides valuable information concretely based on Quran and Sunnah. The author presents and discusses a variety of viewpoints on the various matters of practice.
This is the original, deluxe hardcover US edition.