Numbers 16:15-17

And Moses was very wroth, and said unto the LORD, Respect not thou their offering: I have not taken one ass from them, neither have I hurt one of them.

And Moses said unto Korah, Be thou and all thy company before the LORD, thou, and they, and Aaron, to morrow:

And take every man his censer, and put incense in them, and bring ye before the LORD every man his censer, two hundred and fifty censers; thou also, and Aaron, each of you his censer.