The Beis Yosef on Tur Yoreh De'ah 201 (Hilchos Mikvaos), taught piece by piece.
1 · 2026-10-29
Beis YosefPiece 1 · The Source of Forty Se'ah
The Beis Yosef traces the forty-se'ah mikveh measure to its sources in the Tur and the Gemara.
7 min
2 · 2026-10-29
Beis YosefPiece 2 · Mayim Chayim Only for a Zav
Rain water that was never drawn can still be pasul for a mikveh if it is flowing along the ground.
5 min
3 · 2026-10-29
Beis YosefPiece 3 · Does a Spring Need Forty Se'ah?
Does a natural spring need a full forty se'ah before it can purify, or does flowing spring water suffice?
11 min
4 · 2026-10-29
Beis YosefPiece 4 · Bathing Does Not Make Her Tahor
When drawn water mixes into a spring, the Beis Yosef weighs whether the spring's status can save it.
5 · 2026-10-29
Beis YosefPiece 5 · Toiveling in Rivers: Rabbeinu Tam
The Beis Yosef clarifies when a collection of rainwater counts as a kosher mikveh of forty se'ah.
12 min
6 · 2026-10-29
Beis YosefPiece 6 · Rivers in Winter: The Ri
Mayim she'uvim — drawn water — and how the Beis Yosef reads the Tur on when it invalidates a mikveh.
8 min
7 · 2026-10-29
Beis YosefPiece 7 · The Rosh's Conclusion on Rivers
Can vessels and channels turn otherwise kosher water into she'uvim that spoil a mikveh?
20 min
8 · 2026-10-29
Beis YosefPiece 8 · Gathered and Standing in One Place
The Beis Yosef on water that passed through a kli: when does contact with a vessel make it she'uvim?
9 · 2026-10-29
Beis YosefPiece 9 · Drawn Water Is Pasul
How tumah and taharah move with water — the Beis Yosef cites Rashi on the path of purification.
10 · 2026-10-29
Beis YosefPiece 10 · Flowing Rain Water Is Pasul
A spring emptied into a pool of standing water: is the pool now a spring, or only a mikveh?
6 min
11 · 2026-10-29
Beis YosefPiece 11 · Is She'uvim D'Rabbanan or D'Oraisa?
Is drawn water (she'uvim) invalid mid'oraita, or only by rabbinic decree? The Beis Yosef weighs both sides.
12 · 2026-10-29
Beis YosefPiece 12 · A Mikveh in a Non-Jew's House
The Beis Yosef on joining waters: when does one body of water lend its status to another?
10 min
13 · 2026-10-29
Beis YosefPiece 13 · A Spring Purifies While Flowing
Beis Yosef on the Tur — Beis Yosef · Piece 13 · A Spring Purifies While Flowing.
14 · 2026-10-29
Beis YosefPiece 14 · Seas Have the Din of a Spring
Beis Yosef on the Tur — Beis Yosef · Piece 14 · Seas Have the Din of a Spring — clear animation with the classic.
9 min
15 · 2026-10-29
Beis YosefPiece 15 · A Wave Torn From the Sea
Beis Yosef on the Tur — Beis Yosef · Piece 15 · A Wave Torn From the Sea — clear animation with the classic sources.
16 · 2026-10-29
Beis YosefPiece 16 · Throwing Keilim Into a Wave
Beis Yosef on the Tur — Beis Yosef · Piece 16 · Throwing Keilim Into a Wave — clear animation with the classic.
17 · 2026-10-29
Beis YosefPiece 17 · No Tevilah Inside a Kli
Beis Yosef on the Tur — Beis Yosef · Piece 17 · No Tevilah Inside a Kli — clear animation with the classic sources.
23 min
18 · 2026-10-29
Beis YosefPiece 18 · A Hole the Size of a Flask Spout
Beis Yosef on the Tur — Beis Yosef · Piece 18 · A Hole the Size of a Flask Spout.
22 min
19 · 2026-10-29
Beis YosefPiece 19 · A Spring Flowing Through a Kli
Beis Yosef on the Tur — Beis Yosef · Piece 19 · A Spring Flowing Through a Kli — clear animation with the classic.
30 min
20 · 2026-10-29
Beis YosefPiece 20 · A Kli Inside a Kli
Beis Yosef on the Tur — Beis Yosef · Piece 20 · A Kli Inside a Kli — clear animation with the classic sources side.
