Ezekiel 16:34
And the contrary is in thee from other women in thy whoredoms, whereas none followeth thee to commit whoredoms: and in that thou givest a reward, and no reward is given unto thee, therefore thou art contrary.
Cross-reference
Ezekiel 16:31
Parallel
Ezekiel 16:31 already states Jerusalem 'scorned payment' — verse 34 directly builds on that same point.
Hosea 8:9
Parallel
Hosea 8:9 describes Ephraim hiring lovers (Assyria), directly echoing Jerusalem's paying her lovers.