Temurah, 9a: "Lo Yachlifenu" is a prohibition against exchanging a Hekdesh with an animal belonging to somebody else, and "Lo Yamir oso", against exchanging it for an animal belonging to oneself. ¹

Bartenura (in MishnahTemurah, 5:6): It implies that Temurah is only valid if one specifies 'Zu Tachas Zu', but not if he declares 'Zu Tachas Chatas' or 'Zu Tachas Olah'.

Rashi and Targum Yonasan : It means that one may not swap an animal without a blemish for a blemished one, ¹ or vice-versa.

Rashi: If Tov be?Ra and Ra be?Tov is forbidden, Kal va?Chomer Tov be?Tov and Ra be?Ra. ¹

Temurah, 13a: It implies that only a Yachid can declare a Temurah, but not partners or a Tzibur. ¹

Temurah, 2a & b: "ve'Im" includes a woman, ¹ and "Hamir Yamir", an heir - on the Hekdesh animal that he inherited. ²

Temurah, 13a: To preclude birds of ¹ Kodshim and Menachos from the realm of Temurah

Temurah, 9a: It implies a. that the Temurah of a sheep on a bull and vice-versa; a sheep on a goat and vice-versa, and of a male animal on a female animal and vice-versa, takes effect, and b. that, if one declares one animal a Temurah for many Hekdesh animals or vice-versa, ¹ the Temurah is valid. ²

Sifra: It precludes a. a fetus from becoming a Temurah for a Hekdesh animal or vice-versa; b. a fetus becoming a Temurah for a limb of a Hekdesh animal, ³ or vice-versa; c. a limb becoming a Temurah for whole animals, or vice-versa. ⁴

¹ Refer to 27:2:151:1**.

Temurah, 13a: It teaches us that the initial Hekdesh animal can make a Temurah, but not the baby of the Hekdesh animal or its Temurah ¹ .

Temurah, 7b: To preclude the Kohen from declaring a Temurah on a B'chor that he receives from a Yisrael - since the Yisrael is the original owner. ¹

Temurah, 17a: It implies that the Temurah is Kodesh even be'Shogeg - where he meant to say 'Temuras Olah' na he erred and said 'Temuras Shelamim'. ¹

Temurah 9a: "Tov" is repeated to limit Temurah to where it was initially without a blemish - to preclude an animal that was initially a Ba'al-Mum, which cannot make aTemurah after it has been redeemed. ¹

Riva (in Pasuk 3) and Moshav Zekenim: It needs to write "Ra" twice, to teach us that a Ba'al-Mum can make a Temurah (provided it was a Tam when it was declared Hekdesh), and that a Ba'al-Mum become Kadosh through Temurah (to forbid shearing or working with it).

Refer to 27:10:151:1.

Temurah 4b: He receives only one set of (thirty-nine) Malkos, because the La'av is 'Nitak la'Asei' (connected to the Asei of "Vehayah hu u'Semuraso Yih'yeh Kodesh") - which exempts his from one set of Malkos.

Moshav Zekenim ¹ : There is only one La'av - and the Torah is merely presenting the different expressions of Temurah.