Rashi on Numbers 28:6/רש"י על במדבר כ״ח:ו׳

1העשיה בהר סיני WHICH WAS OFFERED BY MOUNT SINAI — i.e., like those continual burnt offerings which were offered during the days of the installation ceremony (which took place whilst the people were encamped by Mount Sinai). — Another explanation of העשיה בהר סיני is: It compares the continual burnt offering to the burnt offering of Mount Sinai — to that which was offered on the fifth day of the third month, before the Giving of the Torah (see Rashi on Exodus 19:11), of which it is written, (Exodus 24:6) “And he put it (the blood) in basins”: this teaches, therefore, that it (the continual burnt-offering) requires a vessel for the reception of the blood (Sifra, Tzav, Chapter 18 8).