1 Corinthians 7:10-12

Young's Literal Translation

¹⁰ and to the married I announce -- not I, but the Lord -- let not a wife separate from a husband:

¹¹ but and if she may separate, let her remain unmarried, or to the husband let her be reconciled, and let not a husband send away a wife.

¹² And to the rest I speak -- not the Lord -- if any brother hath a wife unbelieving, and she is pleased to dwell with him, let him not send her away;