דברי הימים ב, פרק כ״ט, פסוק ל״ג

The people stepped forward to dedicate animals to be used as sacrifices. The primary approach among commentators is that these offerings did not represent a general concept of holiness. Instead, they belonged to a specific category of sacrifices of lesser holiness, such as peace offerings and thanksgiving offerings.

The unique feature of these specific sacrifices is that the individuals who bring them are allowed to eat and enjoy the meat themselves [רש״י]. The total number of these voluntarily dedicated animals stood at six hundred cattle and three thousand sheep.