(the wife of the Prophet) that she asked Allah's Messenger (ﷺ) about plague, and Allah's Messenger (ﷺ) informed her saying, "Plague was a punishment which Allah used to send on whom He wished, but Allah made it a blessing for the believers. None (among the believers) remains patient in a land in which plague has broken out and considers that nothing will befall him except what Allah has ordained for him, but that Allah will grant him a reward similar to that of a martyr."
Sahih al-Bukhari Book 76, Hadith 49
← Previous Hadith The Prophet (ﷺ) said, "He (a Muslim) who dies of an abdominal disease is a martyr, and he who dies of plague is a martyr."

Sahih al-Bukhari Book 76, Hadith 48 Next Hadith → During the Prophet's fatal illness, he used to recite the Mu'auwidhat (Surat An-Nas and Surat Al- Falaq) and then blow his breath over his body. When his illness was aggravated, I used to recite those two Suras and blow my breath over him and make him rub his body with his own hand for its blessings." (Ma`mar asked Az-Zuhri: How did the Prophet (ﷺ) use to blow? Az-Zuhri said: He used to blow on his hands and then passed them over his face.)

Sahih al-Bukhari Book 76, Hadith 50