It is narrated from the Mother of the Believers, Sayyidah Aishah (may Allah be pleased with her), that the Prophet (peace and blessings be upon him) would enter the morning in a state of major ritual impurity (janabah), and then complete his fast.
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Mansur except Sharik, and Ishaq al-Azraq is alone in narrating it."