Book excerpt: Peninei Halakha is a comprehensive series of books on Jewish law applied to today¿s ever-changing world. In this series, Rabbi Eliezer Melamed¿s well organized, clear, and concise writing style brings the halakha, from principle to practical detail, to readers of all backgrounds. With half a million copies in circulation, Peninei Halakha stands as one of the most popular and useful halakha series in Israel today.