Muhammad ibn Ahmad ibn Yahya narrated from Mu'awiyah ibn Hakim, from Ibn Abi Umayr, from Aban ibn Uthman, from Abdurrahman, who said: I asked Abu Abdillah عليه السلام about a woman who menstruated and then became pure while on a journey, but she could not find water for two or three days. Is it permissible for her husband to have intercourse with her? Imam عليه السلام said: "It is not permissible for her husband to have intercourse with her until she performs ghusl (ritual purification)."