Sahih Bukhari Volume 9, Book 91, Hadith 7016

حَدَّثَنا عَبْدُ اللَّهِ بْنُ مُحَمَّدٍ، حَدَّثَنَا أَزْهَرُ، عَنِ ابْنِ عَوْنٍ، ح وَحَدَّثَنِي خَلِيفَةُ، حَدَّثَنَا مُعَاذٌ، حَدَّثَنَا ابْنُ عَوْنٍ، عَنْ مُحَمَّدٍ، حَدَّثَنَا قَيْسُ بْنُ عُبَادٍ، عَنْ عَبْدِ اللَّهِ بْنِ سَلاَمٍ، قَالَ رَأَيْتُ كَأَنِّي فِي رَوْضَةٍ، وَسَطَ الرَّوْضَةِ عَمُودٌ فِي أَعْلَى الْعَمُودِ عُرْوَةٌ، فَقِيلَ لِي ارْقَهْ‏.‏ قُلْتُ لاَ أَسْتَطِيعُ‏.‏ فَأَتَانِي وَصِيفٌ فَرَفَعَ ثِيَابِي فَرَقِيتُ، فَاسْتَمْسَكْتُ بِالْعُرْوَةِ، فَانْتَبَهْتُ وَأَنَا مُسْتَمْسِكٌ بِهَا، فَقَصَصْتُهَا عَلَى النَّبِيِّ صلى الله عليه وسلم فَقَالَ ‏"‏ تِلْكَ الرَّوْضَةُ رَوْضَةُ الإِسْلاَمِ، وَذَلِكَ الْعَمُودُ عَمُودُ الإِسْلاَمِ، وَتِلْكَ الْعُرْوَةُ عُرْوَةُ الْوُثْقَى، لاَ تَزَالُ مُسْتَمْسِكًا بِالإِسْلاَمِ حَتَّى تَمُوتَ ‏"

Narrated By 'Abdullah bin Salam : (In a dream) I saw myself in a garden, and there was a pillar in the middle of the garden, and there was a handhold at the top of the pillar. I was asked to climb it. I said, "I cannot." Then a servant came and lifted up my clothes and I climbed (the pillar), and then got hold of the handhold, and I woke up while still holding it. I narrated that to the Prophet who said, "The garden symbolizes the garden of Islam, and the handhold is the firm Islamic handhold which indicates that you will be adhering firmly to Islam until you die."