Sahih Bukhari Volume 1, Book 4, Hadith 187

حَدَّثَنَا آدَمُ، قَالَ حَدَّثَنَا شُعْبَةُ، قَالَ حَدَّثَنَا الْحَكَمُ، قَالَ سَمِعْتُ أَبَا جُحَيْفَةَ، يَقُولُ خَرَجَ عَلَيْنَا رَسُولُ اللَّهِ صلى الله عليه وسلم بِالْهَاجِرَةِ، فَأُتِيَ بِوَضُوءٍ فَتَوَضَّأَ، فَجَعَلَ النَّاسُ يَأْخُذُونَ مِنْ فَضْلِ وَضُوئِهِ فَيَتَمَسَّحُونَ بِهِ، فَصَلَّى النَّبِيُّ صلى الله عليه وسلم الظُّهْرَ رَكْعَتَيْنِ وَالْعَصْرَ رَكْعَتَيْنِ، وَبَيْنَ يَدَيْهِ عَنَزَةٌ

Narrated By Abu Juhaifa : Allah's Apostle came to us at noon and water for ablution was brought to him. After he had performed ablution, the remaining water was taken by the people and they started smearing their bodies with it (as a blessed thing). The Prophet offered two Rakat of the Zuhr prayer and then two Rakat of the 'Asr prayer while an 'Anza (spear-headed stick) was there (as a Sutra) in front of him.