It was narrated from Huthaifah that the Prophet (ﷺ) met him when he was Junub:
"And he came close to me and reached out his hand. I said: 'I am Junub.' He said: 'The Muslim is not made impure (Najis).'"
English reference: Vol. 1, Book 1, Hadith 269
Arabic reference: Book 1, Hadith 270