Is the right of the husband's mother the same as the right of one's own mother, and is her satisfaction obligatory for the wife of her son?

Question:
May Allah reward you with good. What are the duties of the husband's mother? Is her right the same as my mother's right? Is her satisfaction obligatory upon me?

Answer:
There is no doubt that the husband's mother has a right that you do not commit any ill treatment toward her, that you respect her, and that you serve her in the manner customary. This is because doing so pleases the husband and helps him to be dutiful to her and treat her well. Thus, your kindness to your husband's mother is part of the good treatment that is commanded. Furthermore, this leads to harmony and agreement, and it makes your husband pleased with you. Everything you do well toward his mother and his relatives is something that makes him love you more. Conversely, any ill treatment or aversion causes your husband to hate you and turn away from you. In any case, you must be kind to your husband's mother, respect her, and serve her in the customary manner, because this leads to the unity of the family, the gathering of the family, and good treatment between you and your husband. Being kind to people in general is required, and the command is to speak to people in a good manner. How much more so with the husband's mother, with whom you live in the same house?