Is reading by the light of a medurah (bonfire/hearth) subject to the same stoking concern as reading by a lamp?

What is the minimum threshold for a wood fire (medurah) kindled before Shabbat to be permitted for use on Shabbat?

4 opinions

Does a wood stove (tiled/plastered oven) have the same threshold requirements as an open wood fire before Shabbat?

1 opinions

May one sit close to the smoldering ends (coals/embers) of a permitted Shabbat fire?

3 opinions

What is the minimum threshold for a coal fire to be permitted for use on Shabbat?

4 opinions across 3 eras

What is the minimum threshold for a fire made of tar, sulfur, straw, or stubble to be permitted for use on Shabbat?

3 opinions

What is the threshold for reeds or date pits used as kindling when they are spread out (not bundled)?

4 opinions across 3 eras

Once a fire meets the required threshold before Shabbat, may one use it on Shabbat regardless of whether it is on the ground or on a stand, and regardless of whether it was made from materials not valid as Shabbat lamp wicks?

2 opinions