Ezra 3:4

They kept also the feast of tabernacles, as it is written
According to the rules prescribed for the observation of it in ( Leviticus 23:34-42 ) this began on the fifteenth day of the seventh month:

and offered the daily burnt offerings by number, according to the
custom, as the duty of every day required;
for on all the eight days of the feast there was a certain number of sacrifices fixed for every day; and exactly according to the law concerning them did they offer them at this time; see ( Numbers 29:12-38 ) .