حَدَّثَنَا أَحْمَدُ بْنُ حَنْبَلٍ، حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، عَنْ هِشَامٍ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتْ إِنَّمَا نَزَلَ رَسُولُ اللَّهِ صلى الله عليه وسلم الْمُحَصَّبَ لِيَكُونَ أَسْمَحَ لِخُرُوجِهِ وَلَيْسَ بِسُنَّةٍ فَمَنْ شَاءَ نَزَلَهُ وَمَنْ شَاءَ لَمْ يَنْزِلْهُ .
Narrated 'Aishah: The Messenger of Allah (PBUH) alighted at al-Muhassab so that it might be easier for him to proceed (to Medina). It is not a sunnah (i.e. a rite of Hajj). Anyone who desires may alight there, and anyone who does not want may not alight. Translation Not Available
Book Ref: Sunan Abi Dawud Book 11 Hadith 2008
Web Ref: Sunan Abi Dawud Book 10 Hadith 2003