(38) باب رُقْيَةِ النَّبِيِّ صلى الله عليه وسلم
Narrated `Aisha:
Allah's Messenger (ﷺ) used to read in his Ruqya, "In the Name of Allah" The earth of our land and the saliva of some of us cure our patient with the permission of our Lord." with a slight shower of saliva) while treating with a Ruqya.
Reference: Sahih al-Bukhari 5746
In-book reference: Book 76, Hadith 61
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 71, Hadith 642