I understand that sexual intercourse with a woman during her menstruation is forbiden. But how about giving a woman in that state orgasm by stimulting her through masturbation. Would that be permissible?
In the name of Allāh, the Most Gracious, the Most Merciful.
Assalamualaikum Warahmatullahi Wabarakatuhu
It will not be permissible for a man to touch any part of a woman from the navel to the knees during the period of her menses. Hence stimulating her through masturbation will fall under the same ruling.
And Allah Ta‘ala knows best
Mufti Luqman Hansrot
 (Bahisti Zewar, Zam Zam Publishers, Vol 1, Page 92)