Usamah bin Sharik said “I went out with the Prophet ﷺ to perform Hajj, and the people were coming to him. One would say “Messenger of Allah ﷺ I ran between Al Safa’ and Al Marwah before going round the Kaabah or I did something before the its proper time or did something after its proper time. He would reply “No harm will come; no harm will come except to one who defames a Muslim acting wrongfully. That is the one who will be in trouble and will perish.

Narrated Usamah ibn Sharik: I came to the Prophet ﷺ and his Companions were sitting as if they had birds on their heads. I saluted and sat down. The desert Arabs then came from here and there. They asked: Messenger of Allah, should we make use of medical treatment? He replied: Make use of medical treatment, for Allah has not made a disease without appointing a remedy for it, with the exception of one disease, namely old age.