Is abstaining from marriage considered disobedience to one's parents, especially if the mother insisted upon it before her death, despite there being no desire for marriage?

The ruling on marriage varies from person to person. It is permissible for someone who has no desire (sexual urge) but is capable of bearing the responsibilities of marriage, because its purpose is chastity and procreation. Marriage may become obligatory if one of the parents commands it, out of filial piety towards them. The questioner must seek forgiveness and repent, and honor his mother after her death by supplicating for her, seeking forgiveness for her, and giving charity on her behalf.