Is the husband obligated to please his wives when he practices plural marriage?

Question:
If he marries a second time, does he give the first wife the same as the second wife's mahr?

Answer:
From the dowry?
Q: Yes.
The Shaykh: No, he does not give her that.
Q: And he is not obligated to do any of this?
The Shaykh: Absolutely not. He must be just between them in division of time and financial maintenance.
Q: Does he not give her something regarding her satisfaction, like ten thousand?
The Shaykh: That is an agreement between them, otherwise it is not obligatory. Allah has permitted him plural marriage if he gives her... so this is among the noble morals and a means of reassurance and alleviating the hardship she suffers; because she suffers hardship when the second wife is present. So if he gives her some amount to reassure her heart and give her some comfort, that is good...
Q: If the first wife conditions that she must have a specific amount of money, otherwise she will not be satisfied and will demand divorce, does he have to give it to her?
The Shaykh: He is not obligated to do so. She must be satisfied, or she is not. It is obligatory for her to be satisfied. But this is among the noble morals and a means of calming matters, for him to give her. Otherwise, she has no right to compel him, and she has no right to demand divorce. Allah has permitted him four, and she is one of them.