The rights of man, defined by a person’s obligations to others.  All rights belong to Allah (Haqq Allah), but some are in a subset (Haqq al-Nas) that belongs to both people and Allah. 

Sins that violate the rights of man include back-biting (ghibah), slander, gossip, theft, adultery, and more. When one of these sins is committed it cannot be forgiven by tawbah (repentance to Allah) alone, except in special circumstances. The violating person must also secure the forgiveness of the person whose rights they have violated.