Numbers 36:6-8

CKJV_Strongs(i)
  6 H1697 This is the thing H3068 which the Lord H6680 does command H1323 concerning the daughters H6765 of Zelophehad, H559 saying, H802 Let them marry H5869 to whom they think H2896 best; H4940 only to the family H4294 of the tribe H1 of their father H802 shall they marry.
  7 H5159 So shall not the inheritance H1121 of the sons H3478 of Israel H5437 remove H4294 from tribe H4294 to tribe: H376 for every one H1121 of the sons H3478 of Israel H1692 shall keep H5159 himself to the inheritance H4294 of the tribe H1 of his fathers.
  8 H1323 And every daughter, H3423 that possesseth H5159 an inheritance H4294 in any tribe H1121 of the sons H3478 of Israel, H802 shall be wife H259 unto one H4940 of the family H4294 of the tribe H1 of her father, H1121 that the sons H3478 of Israel H3423 may enjoy H376 every man H5159 the inheritance H1 of his fathers.