The Book of Hajj
24/177. Chapter:
Sa'I At The Bottom Of The Valley
Sunan an-Nasai
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا حَمَّادٌ، عَنْ بُدَيْلٍ، عَنِ الْمُغِيرَةِ بْنِ حَكِيمٍ، عَنْ صَفِيَّةَ بِنْتِ شَيْبَةَ، عَنِ امْرَأَةٍ، قَالَتْ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَسْعَى فِي بَطْنِ الْمَسِيلِ وَيَقُولُ " لاَ يُقْطَعُ الْوَادِي إِلاَّ شَدًّا " .
It was narrated from Safiyyah bint Shaimah that a woman said: I saw the Messenger of Allah hastening at the bottom of the valley and he said: "The river bed should not be crossed except with vigor."
Reference : Sunan an-Nasa'i 2980In-book reference : Book 24, Hadith 363English translation : Vol. 3, Book 24, Hadith 2983