Sahih Bukhari Volume 8, Book 81, Hadith 6562

حَدَّثَنَا مُوسَى، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا عَمْرُو بْنُ يَحْيَى، عَنْ أَبِيهِ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ ـ رضى الله عنه ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ ‏"‏ إِذَا دَخَلَ أَهْلُ الْجَنَّةِ الْجَنَّةَ، وَأَهْلُ النَّارِ النَّارَ يَقُولُ اللَّهُ مَنْ كَانَ فِي قَلْبِهِ مِثْقَالُ حَبَّةٍ مِنْ خَرْدَلٍ مِنْ إِيمَانٍ فَأَخْرِجُوهُ‏.‏ فَيُخْرَجُونَ قَدِ امْتُحِشُوا وَعَادُوا حُمَمًا، فَيُلْقَوْنَ فِي نَهَرِ الْحَيَاةِ، فَيَنْبُتُونَ كَمَا تَنْبُتُ الْحِبَّةُ فِي حَمِيلِ السَّيْلِ ـ أَوْ قَالَ ـ حَمِيَّةِ السَّيْلِ ‏"‏‏.‏ وَقَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ أَلَمْ تَرَوْا أَنَّهَا تَنْبُتُ صَفْرَاءَ مُلْتَوِيَةً ‏"‏‏.‏

Narrated By Abu Said Al-Khudri : Allah's Apostle said, "When the people of Paradise have entered Paradise, and the people of the Fire have entered the Fire, Allah will say. 'Take out (of the Fire) whoever has got faith equal to a mustard seed in his heart.' They will come out, and by that time they would have burnt and became like coal, and then they will be thrown into the river of Al-Hayyat (life) and they will spring up just as a seed grows on the bank of a rainwater stream." The Prophet said, "Don't you see that the germinating seed comes out yellow and twisted?"