---
title: Siman 470 – Taanis Bechoros
description: "הChelek 5 1. The following first-borns need to fast all day on Erev Pesach: (1) first born of his mother; (2) first born of his father; (3) first born after miscarriages; (4) first born Cohanim and Leviim. (ShA — MB…"
url: "https://mishnaberurasummaries.com/docs/siman-470-taanis-bechoros/"
updated: "2026-07-27"
category: Laws of Pesach – Erev Pesach, Seder Night, Shavuos
---

# Siman 470 – Taanis Bechoros

הChelek 5

1. The following first-borns need to fast all day on Erev Pesach: (1) first born of his mother; (2) first born of his father; (3) first born after miscarriages; (4) first born Cohanim and Leviim. (ShA  — MB )

1. The following first-borns do NOT fast on Erev Pesach: ladies, oldest in the house, born after a baby who died within 30 days of birth, one with a headache or eye ache, one who might have difficulty eating the mitzva foods at the Seder. (Rama  — MB )

1. A father fasts on behalf of his first born son until his bar-mitzva. If the first born boy is not yet 30 days old on Erev Pesach, the father does not need to fast for him. (Rama  — MB )

1. Many places customarily hold a seuda for a siyum. Any bechorim who gather around to listen to how the tractate ends can join in and eat at the seuda afterwards. (MB )

## Key

**ShA**
 : Shulchan Aruch

**MB**
 : Mishna Berura

**ShaH**
 : Shaar Hatsiun

**ShaT**
 : Shaaray Teshuva

**BeH**
 : Beur Halacha

**BaH**
 : Baer Haytayv

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