Is the prayer valid behind someone whose outward appearance indicates a lack of righteousness, such as one who lets his garment hang below the ankles, or others?

Question:
Honorable Shaykh, may Allah grant you success, he says: Is the prayer valid behind someone whose outward appearance indicates a lack of righteousness, such as if he lets his garment hang below the ankles, for example?

Answer:
No, this is not permissible. The prayer is not valid behind one who lets his garment hang below the ankles, nor behind one who commits a major sin among the major sins. The prayer is not valid behind him, because he is an open sinner; one who commits a major sin is an open sinner. Yes, this is when there is a choice, meaning, one does not choose for the imamate someone with this characteristic. But if you come and the people are praying, pray with them, even if the imam is Muslim, pray with them and do not leave the congregation. Yes.