It must be eaten on the day of your sacrifice and on the following day, ¹  but what is left over until the third day must be burned up. ² 

“‘If his offering is a votive or freewill sacrifice, ¹  it may be eaten on the day he presents his sacrifice, and also the leftovers from it may be eaten on the next day, ² 

So David said to Uriah, “Stay here another day. Tomorrow I will send you back.” So Uriah stayed in Jerusalem both that day and the following one. ¹