And a condition for its obligation upon a woman is the presence of her mahram, who is her husband or one who is permanently forbidden to her by lineage or a permissible cause.

The Shaykh : He said, "And a condition for its obligation upon a woman is the presence of her mahram". The pronoun in "its obligation" refers to Hajj. Likewise, a condition for the obligation of 'Umrah upon a woman is the presence of her mahram, meaning that a mahram must be available who agrees to travel with her. Pay attention; it is not sufficient for a mahram to merely exist, but it is necessary that a mahram agrees to travel with her. It is understood from the author's words that the presence of a mahram is a condition for the obligation, because his presence is included in the ability (istita'ah) that Allah the Exalted made a condition for the obligation of Hajj. This inability, which I mean the inability of a woman who has no mahram to reach Makkah, is a legal inability, not a physical inability. Thus, she is like one who lacks money, so Hajj is not obligatory upon her. If she dies and she has a lot of money but did not find a mahram to travel with her, does Hajj come out of her estate, or do we say that she owes nothing? The latter, because this is a condition for the obligation. Some scholars said, "The mahram is a condition for the obligation of performing it personally, not for the obligation itself". According to this opinion, we say that if this woman finds a mahram during her lifetime, she must perform Hajj herself. If she does not find one, then when she dies, Hajj is performed on her behalf from her estate, because the presence of a mahram is a condition for what? For the obligation of performing it personally, not a condition for the obligation itself. However, the correct view of the madhhab is that it is a condition for the obligation, because this woman is unable to reach the sacred sites due to a legal inability.