When a person complained to the Prophet (ﷺ) about an ailment or suffered from a sore or a wound, the Prophet (ﷺ) would touch the ground with his forefinger and then raise it (Sufyan bin `Uyainah, the narrator, demonstrated this with his forefinger) and would recite: `Bismil-lahi, turbatu ardina, biriqati ba`dina, yushfa bihi saqimuni, bi 'idhni Rabbina' (With the Name of Allah, the dust of our ground mixed with the saliva of some of us would cure our patient with the permission of our Rubb.''

[Al-Bukhari and Muslim].