Chapter 1 · Laws of chametz and its search

Matzah - a Torah-level mitzvah in every generation (38–39, 120a)

Lesson 6 of 20 22 min

The Gemara distinguishes: eating matzah on the first night is a Torah-level positive duty (a kezayit), but during the rest of Pesach merely a reshut (no chametz - but matzah is not required). See how the rishonim derive "chametz in a negative, matzah in a positive", and the status of matzah ashirah.

Lesson goals

01Define kosher matzah: five grains, supervision threshold
02Grasp the gap between first night and rest of Pesach
03Distinguish matzah ashirah from matzat mitzvah

Building the Foundation: What is Matzah?

Our journey begins by understanding the fundamentals. What is this 'matzah' about which the Torah commands? The Gemara breaks down the concept into its components, providing us with a precise definition.

פסחים לה ע"א

תנו רבנן: איזו היא מצה? כל שיש בה חמשת מיני דגן: חטים, שעורים, כוסמין, שיפון ושיבולת שועל.

Our Rabbis taught: Which is matzah? Any [bread made from] the five species of grain: wheat, barley, spelt, rye, and oats.

חמשת מיני דגןChameshet Minei Dagan

Wheat, barley, spelt, rye, and oats – these are the only grains that can become chametz, and from these alone can matzat mitzvah be baked.

Insight

This definition isn't merely technical; it reveals the essence of the mitzvah. Only that which can become chametz can also be matzah. This is a complete contrast to 'chametz,' and thus matzah receives its meaning.

Supervision and Time: Preventing Chametz

It's not enough for matzah to be made from the five species of grain. It must be 'shmurah' – meaning, actively guarded against becoming chametz. This is a continuous work of vigilance and precision.

פסחים לז ע"א

מצה שאינה שמורה אינה מצה.

Matzah that is not guarded is not matzah.

1Grain Selection: The grain is guarded from the moment of harvest ('for the sake of matzat mitzvah').
2Milling and Kneading: Water and flour meet, and the process must be swift and meticulous to prevent chametz. Any delay endangers its kosher status.
3Baking: Baking must be at high heat and rapid, without interruptions.

Insight

The concept of 'shmurah' emphasizes the required proactivity. It's not enough for it not to become chametz; one must act proactively to ensure it doesn't become chametz. This is a positive commandment of 'guarding'.

First Night vs. Rest of the Holiday: Obligation vs. Permissibility

The Gemara draws a clear line between eating matzah on Seder night and eating it during the rest of Pesach. This is a fundamental difference, impacting practical halakha.

פסחים קכ ע"א (בשינוי קל)

מצות מצה בליל ראשון דאורייתא, שאר כל הפסח מדרבנן.

The mitzvah of eating matzah on the first night is from the Torah, and for the rest of Pesach it is from the Rabbis.

Kushya

If the prohibition of chametz is Torah-level for the entire Pesach ('chametz shall not be eaten'), why is the mitzvah of eating matzah only on the first night?

Terutz

The Torah commanded 'Seven days you shall eat matzot' (Exodus 12:15). Our Sages learned from this that only on the first night is there an active obligation to eat. On the other days, the mitzvah is passive – to refrain from chametz, and matzah is merely a kosher substitute, not an obligation.

Matzah Ashirah: Not for the Mitzvah

Not all matzah is kosher for the mitzvah of eating matzah on Seder night. The Gemara distinguishes between regular matzah and 'matzah ashirah,' and establishes its halakhic status.

פסחים לה ע"א

מצה עשירה, אין יוצאין בה ידי חובתן בפסח.

Matzah ashirah, one does not fulfill their obligation with it on Pesach.

מצה עשירהMatzah Ashirah

Matzah kneaded with fruit juice (wine, grape juice, eggs, oil, etc.) instead of water. This matzah does not become chametz, and therefore is not considered 'bread of affliction' and is not kosher for the mitzvah of eating matzah on Seder night.

Insight

The reason one does not fulfill their obligation with it is not that it is chametz, but rather that it is not 'bread of affliction'. The mitzvah of matzah is to eat the bread that the Children of Israel ate in haste and scarcity. Matzah ashirah, by its very nature, does not reflect poverty.

Vocabulary from the dictionary

Each word links to the full dictionary entry - source, translation, and grammar.

Practice

List three questions to ask a baker before buying matzah: supervision span? which grain? kneading time?

Lesson wrap-up

Matzah is not just "non-chametz" - it is the object of cherut.

Check your understanding

Test yourself before marking the lesson complete.

Question 1 of 4

What is one of the essential conditions for matzah to be kosher for the mitzvah according to the Gemara?

Previous lessonMekhirat chametz - from indirect heter to halakhic protocol (21a, Rema 448)

Next lessonThe essence of Korban Pesach: a family sacrifice, not individual (61–66)