Exodus 24:8
7 He took the Book of the Covenant and read it aloud to the people, and they said, “We are willing to do and obey all that the Lord has spoken.” 8 So Moses took the blood and splashed it on the people and said, “This is the blood of the covenant that the Lord has made with you in accordance with all these words.” 9 Moses and Aaron, Nadab and Abihu, and the seventy elders of Israel went up,
Jubilees 6:11
10 And Noah and his sons swore that they would not eat any blood that was in any flesh, and he made a covenant before the Lord God for ever throughout all the generations of the earth in this month. 11 On this account He spake to thee that thou shouldst make a covenant with the children of Israel in this month upon the mountain with an oath, and that thou shouldst sprinkle blood upon them because of all the words of the covenant, which the Lord made with them for ever.
Notes and References
"... Here he alludes to a rather mysterious element in the biblical account of the Sinai covenant: in an otherwise unparalleled gesture, Moses is said there to have sprinkled blood on the people at the conclusion of that covenant (Exodus 24:8). The reason Moses did so, according to the Interpolator, was as a reminder of the oath that Noah and his sons had sworn centuries before: “We won’t ever eat blood!” Of course, Exodus did not say anything of the kind, but that hardly mattered. In presenting things in this fashion, the Interpolator suggested that the blood prohibition was absolutely crucial (which, to him, it was), and further implied that the covenants with Noah and Moses were not only linked by date (the third month) but also by content ..."
Kugel, James L. A Walk through Jubilees: Studies in the Book of Jubilees and the World of Its Creation (pp. 60-61) Brill, 2012