Jesus agrees with God and his word, but he does not agree with the way the religious leaders have applied God's word. The "I" is emphatic. This indicates that what Jesus says is equally important to the original commands from God. Try to translate this phrase in a way that shows that emphasis. See how you translated this in [Matthew 5:22](../05/22.md).
It is the man who divorces the woman improperly who "causes her to commit adultery." In many cultures it would be normal for her to remarry, but if the divorce is improper, such a remarriage is adultery.
This can be stated in active form. Alternate translation: "her after her husband has divorced her" or "the divorced woman" (See: [[rc://en/ta/man/translate/figs-activepassive]])