Halakhah sa Mga Bilang 8:1: Shulchan Arukh, Orach Chayim

We read of the sacrifices of the nesi'im, which are in Parshat Nasso (Numbers 7:1 – 8:4), three each day; and we start reading from the blessing of the priests [And there are those who say that we start from 'on the day that Moses had made an end' (ibid. 7:1) [Tur] and such is our practice.] And it is read with a kohen and a Levite, and an Israelite reads on the first day. [And there are those who say that the kohen reads the whole portion until 'on the first day' and the Levite and Israelite read 'on the first day', and such is our practice.] On the second day, the Kohen reads "on the second day" until "one young bullock," the Levite reads until "on the third day," and the Israelite repeats from "on the second day", and the portions are read accordingly, each day. [And there are those who say that the Israelite reads the portion of the following day, that is, from 'on the third day', and accordingly each day, and such is our practice (Haggahot Maimuniyyot). On the eight day [of Hanukkah], we start "on the eighth day", and we finish the whole portion, and we read the first portion of [parshat] Beha'a lotcha. (And it is our practice to finish with 'so he made the candlestick')(Minhagim)."