Abu Dawud Book 22, Hadith Number 3876.

Narated By Thabit ibn Qays ibn Shammas : The Apostle of Allah (PBUH) entered upon Thabit ibn Qays. The version of Ahmad (ibn Salih) has: When he was ill He (the Prophet) said: Remove the harm, O Lord of men, from Thabit ibn Qays ibn Shammas. He then took some dust of Bathan, and put it in a bowel, and then mixed it with water and blew in it, and poured it on him.