What is the ruling on a marriage contract if one of the witnesses had slandered chaste women, or was known for lying?

The question regarding doubts about the marriage contract has been asked repeatedly. The certainty of the validity of the marriage is not removed except by an equally certain matter. Therefore, do not pay attention to matters based on doubt. Be a good companion to your husband, and direct your efforts towards what benefits you in matters of your religion and your worldly life.