That the Messenger of Allah was treated by means of cupping when he was in Ihram on the top of the foot for contusion that he had suffered.  

أَنَّ رَسُولَ اللَّهِ ﷺ احْتَجَمَ وَهُوَ مُحْرِمٌ عَلَى ظَهْرِ الْقَدَمِ مِنْ وَثْءٍ كَانَ بِهِ