Al-Husayn bin Sa’eed, from Al-Nadr, from Muhammad bin Abi Hamzah, from Sa’eed Al-A‘raj, who said:
I heard Abu Abdullah عليه السلام say: "A man may sleep while he is in a state of janabah, and a woman may sleep while she is in a state of janabah."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 392