Mark 10:12

And if she divorces her husband [and] marries another, she commits adultery."

1 Corinthians 7:11

But if indeed she does separate, she must remain unmarried or be reconciled to her husband. And a husband must not divorce [his] wife.

1 Corinthians 7:13

And if any wife has an unbelieving husband and he consents to live with her, she must not divorce her husband.

Treasury of Scripture Knowledge

Summary

And if a woman shall put away her husband, and be married to another, she committeth adultery.

Bible References

General references

Exodus 20:14
"You shall not commit adultery.
Luke 16:18
"Everyone who divorces his wife and marries another commits adultery, and the one who marries a woman divorced from [her] husband commits adultery.
1 Corinthians 7:4
The wife does not have authority over her own body, but her husband [does]. And likewise also the husband does not have authority over his own body, but his wife [does].