Is it permissible to perform Umrah after the cessation of postpartum bleeding, or after 40 days?

A woman experiencing post-natal bleeding (nifas) is permitted to enter into the state of ihram for Hajj and Umrah. She may perform all the rituals of Hajj and Umrah except for circumambulation (tawaf). It is recommended for her to perform a ritual bath (ghusl) when entering ihram, even if she is still in her state of nifas. Once she becomes pure from nifas and performs ghusl, it is then permissible for her to perform tawaf, and she should not wait until forty days have passed. This is because the maximum duration for nifas, according to the preponderant opinion, is forty days, while there is no minimum duration. Thus, whenever she observes purity, she should perform ghusl and pray.