Sahih Muslim Book 3, Hadith Number 588.

Chapter : The menstruating woman is permitted to wash the head of her husband, comb his hair, and her left-over is clean, and one is permitted to recline in her lap and recite the Qur’an.

‘Aisha reported: The Messenger of Allah (may peace be upon him) ordered me that I should get him the mat from the mosque. I said: I am menstruating. He (the Holy Prophet) said: Do get me that, for menstruation is not in your hand.