The Holy Prophet (sa) grants cure through his blessed hands
In another instance, whilst mentioning how the Holy Prophet (sa) granted cure through his blessed hands, Hazrat Musleh-e-Maud (ra) states:
“We witness such examples in this world wherein certain people stricken with illness are miraculously cured without even undergoing any medical treatment, or at times, they are granted cure when the medical treatment proves unsuccessful. A similar kind of incident in regard to granting cure is found in the life of the Holy Prophet (sa) during the Battle of Khaybar. During the Battle of Khaybar, the Holy Prophet (sa) stated, ‘The victory of Khaybar has been destined with the one whom I grant my flag to.’ Hazrat Umar (ra) relates that when the time [of battle] approached, he raised his neck and began to look around in the hope that perhaps the Holy Prophet (sa) would grant him the flag. However, the Holy Prophet (sa) did not assign him with this duty. In the meanwhile, Hazrat Ali (ra) came and at the time, he was experiencing a lot of pain in the eyes. The Holy Prophet (sa) placed his blessed saliva upon his eyes and he was immediately cured from the ailment of his eyes. The Holy Prophet (sa) then placed the flag in Hazrat Ali (ra)’s hand and entrusted him with the conquest of Khaibar.”
(Hasti-e-Bari Ta‘ala, Anwar al-Ulum, Vol. 6, p. 327)