Mishkat al-Masabih 10 The Rites of Pilgrimage كتاب المناسك 184

وَعَنْ أَنَسٍ رَضِيَ اللَّهُ عَنْهُ قَالَ: احْتَجَمَ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَهُوَ مُحْرِمٌ عَلَى ظَهْرِ الْقَدَمِ مِنْ وَجَعٍ كَانَ بِهِ. رَوَاهُ أَبُو دَاوُدَ وَالنَّسَائِيُّ

Anas said that God’s messenger had himself cupped on the surface of his foot because of a pain in it while he was in the sacred state. Abu Dawud and Nasa’i transmitted it.