The climate of Medina did not suit some people, so the Prophet (ﷺ) ordered them to follow his shepherd, i.e. his camels, and drink their milk and urine (as a medicine). So they followed the shepherd that is the camels and drank their milk and urine till their bodies became healthy. Then they killed the shepherd and drove away the camels. When the news reached the Prophet (ﷺ) he sent some people in their pursuit. When they were brought, he cut their hands and feet and their eyes were branded with heated pieces of iron.
Sahih al-Bukhari Book 76, Hadith 9
← Previous Hadith Some people were sick and they said, "O Allah's Messenger (ﷺ)! Give us shelter and food. So when they became healthy they said, "The weather of Medina is not suitable for us." So he sent them to Al-Harra with some she-camels of his and said, "Drink of their milk." But when they became healthy, they killed the shepherd of the Prophet (ﷺ) and drove away his camels. The Prophet (ﷺ) sent some people in their pursuit. Then he got their hands and feet cut and their eyes were branded with heated pieces of iron. I saw one of them licking the earth with his tongue till he died.

Sahih al-Bukhari Book 76, Hadith 8 Next Hadith → We went out and Ghalib bin Abjar was accompanying us. He fell ill on the way and when we arrived at Medina he was still sick. Ibn Abi 'Atiq came to visit him and said to us, "Treat him with black cumin. Take five or seven seeds and crush them (mix the powder with oil) and drop the resulting mixture into both nostrils, for `Aisha has narrated to me that she heard the Prophet (ﷺ) saying, 'This black cumin is healing for all diseases except As-Sam.' Aisha said, 'What is As-Sam?' He said, 'Death."

Sahih al-Bukhari Book 76, Hadith 10