Numbers 35:13-15

Young's Literal Translation

¹³ `As to the cities which ye give -- six [are] cities of refuge to you;

¹⁴ the three of the cities ye give beyond the Jordan, and the three of the cities ye give in the land of Canaan; cities of refuge they are.

¹⁵ To sons of Israel, and to a sojourner, and to a settler in their midst, are these six cities for a refuge, for the fleeing thither of any one smiting a person unawares.