According to Osho, when a partner clings to a rigid 'purity' ideal, argument and rescue attempts only drive them deeper into it. You cannot convert them—especially a husband converting a wife. Honor their freedom; let them learn by bitter experience. Non-interference prevents escalation, and the relationship may naturally loosen or end rather than becoming a torturous power struggle.
If your partner becomes strict about being “pure,” trying to fix them makes it worse—give space and let life teach them.