Pseudo Jonathan Leviticus 22:28

Sons of Israel, my people, as our Father in heaven is merciful, so shall you be merciful on earth: neither cow, nor ewe, shall you sacrifice along with her young on the same day. And when you offer a sacrifice of thanksgiving to the Name of the Lord, you shall offer so as to be accepted. It shall be eaten on that day, none shall remain till the morning: I am the Lord. And you shall observe My commandments to do them I am the Lord who give a good reward, to them who keep My commandments and My laws. Nor shall you profane My Holy Name, that I may be hallowed among the children of Israel.

Date: 300-1200 C.E.
* Dates are based on scholarly estimates
Rabbinic

Shabbat 133b

Babylonian Talmud

Abba Shaul says: Ve’anveihu should be interpreted as if it were written in two words: Ani vaHu, me and Him [God]. Be similar, as it were, to Him, the Almighty: Just as He is compassionate and merciful, so too should you be compassionate and merciful. In any case, there is no proof from Rabbi Yishmael’s statement with regard to the Paschal lamb that he would say the same with regard to circumcision, as in that case, he might agree that fulfilling the mitzva beautifully justifies overriding Shabbat.

Date: 450-550 C.E.
* Dates are based on scholarly estimates