Is it permissible for a woman in the waiting period to perform 'Umrah?

The Shaykh : Is it permissible for a woman in the waiting period to perform 'Umrah, or...? A woman in the waiting period due to her husband's death is not permitted to perform 'Umrah during her waiting period, because a woman whose husband has died must remain in the house where her husband died and where she was residing; she may not leave it except out of necessity, such as if she needs to go to the hospital for treatment or something similar. Otherwise, it is obligatory for her to remain in her husband's house. As for a woman in the waiting period due to divorce or something similar, there is no harm in her performing 'Umrah if she is accompanied by her husband or by a trustworthy person, a trustworthy person from among her mahram (relatives one may not marry).