Sayyidah Maymunah bint Sa'd (may Allah be pleased with her) said: I said: O Messenger of Allah, may one of us eat while in a state of major impurity? He (peace and blessings be upon him) said: "He should not eat until he performs ablution." I said: O Messenger of Allah, may a person in a state of major impurity sleep? He (peace and blessings be upon him) said: "I do not like that he should sleep while in a state of major impurity until he performs ablution and performs his ablution well, for I fear that he may die and Jibril (peace be upon him) would not attend him."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21528