What is the ruling on the hadith that states, "The demise of my Ummah will be by stabbing and plague," and then interprets plague as "the pricking of your enemies from among the jinn," compared to another hadith that interprets plague as "a gland like a camel's gland," and does this contradict the fact that plague is caused by germs and bacteria?

The summary of the fatwa is: Authentic ahadith have been narrated describing the annihilation of the Ummah by plague (ta'un) and stabbing (ta'n). Ta'un is the sting of the jinn, or a gland that appears in the body of the infected person. There is no contradiction between the ahadith; if it is possible to reconcile two texts, neither should be rejected. There is no contradiction between what the hadith mentioned and what modern medicine has concluded regarding the causes of plague, as it may have two causes: a tangible, apparent one (germs), and another unseen, hidden one (the sting of the jinn). So, the plague is caused by an unseen matter (the sting of the jinn), and then its physical effects (the gland and germs) appear.