Intermediate Talmud:

Tractate Shabbat, Lesson 28

"Fire Away and Filler Up"

A new Mishnah is introduced with a broad background about sacred soil and holy harvests. Defilement of such hallowed edibles, mandates mitzvah incineration. Differing opinions about varied fuels and flammable agents and their compatibility with Shabbat serenity are enumerated. The Gemara opens with an investigation for the source for the timely holiday ban on the burning of contaminated sacraments.

For previous classes on Tractate Shabbat visit: http://www.chabad.org/multimedia/media_cdo/aid/2968134/jewish/Intermediate-Talmud-Tractate-Shabbat.htm