Hadith 77:7
Narrated Abu Huraira:
The Prophet (or 'Abul Qasim) said, "While a man was walking, clad in a two-piece garment and proud of himself with his hair well-combed, suddenly Allah made him sink into the earth and he will go on sinking into it till the Day of Resurrection.
حَدَّثَنَا آدَمُ، حَدَّثَنَا شُعْبَةُ، حَدَّثَنَا مُحَمَّدُ بْنُ زِيَادٍ، قَالَ سَمِعْتُ أَبَا هُرَيْرَةَ، يَقُولُ قَالَ النَّبِيُّ ـ أَوْ قَالَ أَبُو الْقَاسِمِ ـ صلى الله عليه وسلم " بَيْنَمَا رَجُلٌ يَمْشِي فِي حُلَّةٍ، تُعْجِبُهُ نَفْسُهُ مُرَجِّلٌ جُمَّتَهُ، إِذْ خَسَفَ اللَّهُ بِهِ، فَهْوَ يَتَجَلَّلُ إِلَى يَوْمِ الْقِيَامَةِ "
Original Reference: Sahih al-Bukhari 5789