Mishnayos Keilim Perek 17 Mishnah 14

יש במה שנברא יום הראשון טומאה – this is what he said: There are things that were created on the First Day [of the Creation of the world], that one who makes vessels from them, they have ritual defilement, such as the land which was created on the first day, and earthenware vessels that are made from it are ritually defiled.

בשני אין בו טומאה – for on it, the firmament was created and it lacks ritual defilement.

בשלישי – [on the third day] trees were created, and wood vessels made from them are susceptible to receive ritual defilement.

ברביעי – the heavenly lights were suspended [in the sky], and they lack ritual defilement.

בחמישי – [on the Fifth day] birds and fish [were created], and if he made vessels from them, they are not susceptible to receive ritual defilement.

חוץ מכנף העוז (except for the wing of the black eagle) – the wing of the black eagle, for the Rabbis decreed ritual defilement with vessels made from her, for one can come to switch it with other vessels.

וביצת הנעמית המצופה (the glazed shell of an ostrich egg) – we translate into Aramaic the בת היענה (see Leviticus 11:16) – the egg of an ostrich is called נעמיתא/an ostrich egg. But the Rabbis decreed ritual defilement on its egg when it is a glazed shell, since without he covering, it also stands, but the rest of the eggs, even with a glazed shell, they did not make a decree, since it is not covered, it doesn’t exist at all.

כל שנברא ביום הששי טמא – beasts and animals and reptiles and mankind [were created on the Sixth day of Creation], if one made vessels from their bones or from their skins, they are susceptible to receive ritual defilement.