Hammad bin Zayd حماد بن زيد بن درهم الأزدي الأزرق · Sacrifice (Kitab Al-Dahaya)

We performed tamattu' during the lifetime of the Messenger of Allah (ﷺ), sacrificed a cow for seven and a camel for seven people. We shared them.

A man of Banu Harith was pasturing a pregnant she-camel in one of the ravines of Uhud, (he saw that) it was about to die; he could find nothing to slaughter it; he took a stake and stabbed it in the upper part of its breast until he made its blood flow. He then came to the Prophet (ﷺ) and informed him about that, and he ordered him to eat it.

The Prophet (ﷺ) said: The slaughter of embryo is included when its mother is slaughtered.

Fara' was the first animal born to them (the Arabs) which they sacrificed.

I heard the Prophet (nay peace be upon him) say: Let the birds stay in their roosts. She said: I also heard him say: Two sheep are to be sacrificed for a boy and one for a girl, but it does you no harm whether they are male or female.