As Salam alaikum
What does Islam say about pure soul?...
As long as the soul is pure and does not want immorality?
And wants to remain chaste?
Wa alaikum salam,
What Islam says about pure soul?
It was narrated from Abu Hurairah that the Prophet said:
"When the believer is dying, the angels of mercy come to him with white silk and sya: 'Come out content and with the pleasure of Allah upon you to the mercy of Allah, fragrance and a Lord Who is not angry; So it comes out like the best fragrance of musk. They pass him from one to another until they bring him to the gate of heaven, where they say: '; How good is this fragrance that has come to you from the Earth! Then the souls of the believers come to him and they rejoice more over him than any one of you rejoices when his absent loved one comes to him. They ask him: 'What happened to so-and-so, what happened to so-and-so?' They say: 'Let him be, for he was in the hardship of the world. When he says, 'Did he not come here?' They say: 'He was taken to the pit (of Hell).' Come out discontent, subject of Divine wrath, to the punishment of Allah, the Mighty and Sublime; So it comes out like the foulest stench of a corpse. They bring him to the gates of the Earth, where they say: 'How foul is this stench!' Then they bring him to the souls of the disbelievers."
Reference: Sunan an-Nasa'i 1833
In-book reference : Book 21, Hadith 16
English translation : Vol. 3, Book 21, Hadith 183. Grade: Sahih. Link:
https://sunnah.com/nasai:1833
As for soul being immortal this seems like bit fallacy, because Allah Said:
“And they ask you, [O Muhammad], about the soul. Say, "The soul is of the affair of my Lord. And mankind have not been given of knowledge except a little." [Quran 17:85]
If you mean that soul has beginning but no end, this is actually proven:
https://islamqa.info/en/answers/6090/the-souls-connection-to-the-body