Bismillahi Rahmani Raheem, Assalamu Alaikum.
It was narrated that Abu Hurayrah (ra) said: “I was met by the Messenger of Allah (peace and blessings of Allah be upon him) and I was junub. He took my hand and I walked with him until he sat down. Then I slipped away and washed myself (ghusl), then I came to where he was sitting. He said, ‘Where were you, O Abu [Hurayrah]?’ I told him, and he said, ‘Subhan-Allah, O Abu [Hurayrah]!, the believer (such as Abu Hurairah) does not become impure.” (Narrated by al-Bukhari, al-Ghusl, 276; Muslim, al-Hayd, 556).
Imam Al-Nawawi said in his Commentary on Saheeh Muslim: this hadeeth illustrates a great principle that the Muslim is taahir whether he is alive or dead. If his (spiritual) purity is established, then his sweat, saliva and tears are all pure too, whether he (or she) is without wudoo’, in a state of major impurity (junub), menstruating or bleeding after childbirth.
Shaykh Rami Al Rfiai.