It was narrated that Jabir bin 'Abdullah said:
"The Prophet was asked about whether a person who is sexually impure can sleep, or eat, or drink. He said: 'yes, if he does ablution as for the prayer.'" (FR)
English reference (FR): Vol. 1, Book 1, Hadith 592 (FR)
Arabic reference (FR): Book 1, Hadith 635 (FR)