Numbers 21:15

15 And the spring of the brooks, Which turned aside to the dwelling of Ar, And hath leaned to the border of Moab.'

Numbers 21:15 In-Context

13 From thence they have journeyed, and encamp beyond Arnon, which [is] in the wilderness which is coming out of the border of the Amorite, for Arnon [is] the border of Moab, between Moab and the Amorite;
14 therefore it is said in a book, `The wars of Jehovah,' -- `Waheb in Suphah, And the brooks of Arnon;
15 And the spring of the brooks, Which turned aside to the dwelling of Ar, And hath leaned to the border of Moab.'
16 And from thence [they journeyed] to Beer; it [is] the well [concerning] which Jehovah said to Moses, `Gather the people, and I give to them -- water.'
17 Then singeth Israel this song, concerning the well -- they have answered to it:
Young's Literal Translation is in the public domain.