"Whoever had the weight of a speck of faith in his heart will depart from the Fire." Abu Sa'eed said: "Whoever has doubt then let him recite: Indeed Allah does not deal unjustly with even the weight of a speck."
Jami` at-Tirmidhi Book 39, Hadith 26
← Previous Hadith " Some of the people of Tawhid will be punished in the Fire until they are coals. Then the Mercy (of Allah) will reach them, they will be taken out and tossed at the doors of Paradise." He said: " The people of Paradise will pour water over them, and they will sprout as the debris carried by the flood sprouts, then they will enter Paradise."

Jami` at-Tirmidhi Book 39, Hadith 25 Next Hadith → "Indeed two men among those who entered the Fire will be screaming violently. So the Lord, Blessed and Exalted, will say: 'Take them out.' Then when they are taken out He will say: 'What caused you to scream so violently?' They will say: 'We did that so You would have mercy on us.' He will say: 'My mercy for you is that you both go and throw yourselves where you were in the Fire.' So they will go. One of them will throw himself in, and He will make it cool and peaceful for him. And the other will stand there and not throw himself in, so the Lord, Mighty and Majestic, will say to him: 'What prevented you from throwing yourself in as your companion did?' He will say: 'O Lord! I hope that you will not return me to it aftrr You have taken me out.' So the Lord, Blessed and Exalted, will say to him: 'For you is what you hoped for,' and so they will both enter Paradise together by the mercy of Allah."

Jami` at-Tirmidhi Book 39, Hadith 27