LXX Deuteronomy 16:7
5 Thou shalt not have power to sacrifice the passover in any of the cities, which the Lord thy God gives thee. 6 But in the place which the Lord thy God shall choose, to have his name called there, thou shalt sacrifice the passover at even at the setting of the sun, at the time when thou camest out of Egypt. 7 And thou shalt boil and roast and eat it in the place, which the Lord thy God shall choose; and thou shalt return in the morning, and go to thy house. 8 Six days shalt thou eat unleavened bread, and on the seventh day is a holiday, a feast to the Lord thy God: thou shalt not do in it any work, save what must be done by any one. 9 Seven weeks shalt thou number to thyself; when thou hast begun to put the sickle to the corn, thou shalt begin to number seven weeks.
LXX 2 Chronicles 35:13
11 And they slew the passover, and the priests sprinkled the blood from their hand, and the Levites flayed the victims. 12 And they prepared the whole-burnt-offering to give to them, according to the division by the houses of families, even to the sons of the people, to offer to the Lord, as it is written in the book of Moses. 13 And thus they did till the morning. And they roasted the passover with fire according to the ordinance; and boiled the holy pieces in copper vessels and caldrons, and the feast went on well, and they quickly served all the children of the people. 14 And after they had prepared for themselves and for the priests, for the priests were engaged in offering the whole-burnt-offerings and the fat until night, then the Levites prepared for themselves, and for their brethren the sons of Aaron. 15 And the sons of Asaph the psalm-singers were at their post according to the commands of David, and Asaph, and Æman, and Idithom, the prophets of the king: also the chiefs and the porters of the several gates;—it was not for them to stir from the service of the holy things, for their brethren the Levites prepared for them.
Notes and References
"... in Chronicles, the tôrah (“law”) is a term used to give legitimacy to post-exilic religious practices such as the maintenance and organization of the temple, which are omitted in the Pentateuch ... For instance, Chronicles lowers the age at which a Levite begins to serve in the temple from thirty to twenty (1 Chronicles 23:24-27; contrast this with 1 Chronicles 23:3 and Numbers 4:23) and requires ten lampstands (2 Chronicles 4:7, 20) amongst the temple furnishings instead of the one six-branched lampstand sufficient for the tabernacle (Exodus 25:32; 37:17-23). Moreover, Chronicles harmonizes the conflicting Passover regulations about the preparation of the Passover animal. In Exodus 12:9, it is to be roasted and not eaten raw or boiled, while in Deuteronomy 16:7, it is to be boiled. 2 Chronicles 35:13 combines the two: “And they boiled the Passover lamb in the fire according to the decision (mišpaṭ)”; mišpaṭ here must mean “according to the interpretive tradition” ..."
Holm, Tawny "Moses in the Prophets and the Writings of the Hebrew Bible" in Beal, Jane (ed.) Illuminating Moses: A History of Reception from Exodus to the Renaissance (pp. 37-57) Brill, 2014