Yahya related to me from Malik from Ibn Shihab from Urwa ibn az- Zubayr from A'isha that the Messenger of Allah ﷺ when he had a complaint, would recite the last three suras of Qur'an, over himself and blow. She said, "When his pain was great, I would recite it over him and wipe him with his right hand hoping for its blessing."
أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ إِذَا اشْتَكَى يَقْرَأُ عَلَى نَفْسِهِ بِالْمُعَوِّذَاتِ وَيَنْفِثُ قَالَتْ فَلَمَّا اشْتَدَّ وَجَعُهُ كُنْتُ أَنَا أَقْرَأُ عَلَيْهِ وَأَمْسَحُ عَلَيْهِ بِيَمِينِهِ رَجَاءَ بَرَكَتِهَا