Evidence that the islam of one who becomes muslim on his deathbed is valid, so long as the death thoes have not begun; Abrogation of permission to supplicate for forgiveness for the idolaters; Evidence that one who dies an idolater is one of the people of hell and no intervention can save him from that
Abdullah reported Allah's Messenger (ﷺ) as saying:
There would be before you a Cistern (as extensive) as there is the distance between Jarba' and Adhruh and there would be jugs like stars in the sky; he who would come to that and drink from it would never feel thirsty after that.
Reference: Sahih Muslim 2299 e In-book : Book 43, Hadith 49 USC-MSA web (English) : Book 30, Hadith 5700 (deprecated)
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