It is narrated from Sayyiduna Abu Musa al-Ash'ari (may Allah be pleased with him) that the plague was mentioned in his presence, so Abu Musa said: We asked the Messenger of Allah (peace and blessings be upon him) about it, and he ((peace and blessings be upon him)) said: "It is a piercing from your (unseen) brothers - or he said: your enemies - namely the jinn, and for you it is (the rank of) martyrdom." This hadith is sahih on the condition of Muslim, but the two of them did not record it. Abu Awanah narrated it from Abu Balj in the same way:

It is narrated from Sayyiduna Abu Musa Abdullah bin Qays (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said something similar about the plague (that it is a piercing of the jinn).