حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ هِشَامٍ، قَالَ حَدَّثَنِي أَبِي قَالَ، سُئِلَ أُسَامَةُ وَأَنَا شَاهِدٌ، عَنْ سَيْرِ النَّبِيِّ، صلى الله عليه وسلم فِي حَجَّتِهِ‏.‏ فَقَالَ الْعَنَقَ، فَإِذَا وَجَدَ فَجْوَةً نَصَّ‏.‏

Narrated Hisham's father: In my presence, Usama was asked about the speed of the Prophet (PBUH) during his Hajj. He replied, "It was Al-`Anaq (i.e. moderate easy speed) and if he encountered an open space, he used to increase his speed." Translation Not Available

Book Ref: Sahih Bukhari Book 64 Hadith 4413
Web Ref:  Sahih Bukhari Vol 5 Book 59 Hadith 697