Numbers 12:14-15

14But the Lord said to Moses, ‘Even if her father had spat on her face, she would have to be ashamed for seven days. So you must keep her outside the camp for seven days. After that you can let her come back inside the camp.’

15So Moses kept Miriam outside the camp for seven days. The people did not start to travel again until they had brought Miriam back into the camp again.