Should Tachanun be said on Tisha B'Av, and what is read from Torah?

Synopsis

Do not say Tachanun on Tisha B'Av and do not fall on one's face, because Tisha B'Av is considered a festival day. The Torah reading is 'When you bear children' (Deuteronomy 4:25) and the Haftarah is from Jeremiah 'I will make an end of them'.

Early Acharonim
Lenient
Strict
Lesser cited
Major authority

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