What is the explanation of Mu'adh's Hadith: "The flourishing of Bayt al-Maqdis is the ruin of Yathrib, and the ruin of Yathrib is the emergence of the great battle (al-Malhama), and the emergence of the great battle is the conquest of Constantinople, and the conquest of Constantinople is the emergence of the Dajjal"?

The Hadith "The flourishing of Jerusalem is the ruination of Yathrib" was narrated by Ibn Abi Shaybah, Ahmad, Abu Dawud, and others. Its chain of narration includes Abd al-Rahman ibn Thabit ibn Thawban, who is weak, and there is disagreement regarding its isnad (chain of narration). Shu'ayb al-Arna'ut declared the hadith weak, while Al-Albani deemed it good (hasan).

Assuming its authenticity, its meaning is that every event is a sign for what follows it: The flourishing of Jerusalem (abundance of men, property, and wealth, or the establishment of the Caliphate there) is a cause for the ruination of Yathrib. The ruination of Yathrib causes the advent of the great battle (al-Malhamah). The advent of al-Malhamah is followed by the conquest of Constantinople. And the conquest of Constantinople is followed by the emergence of the Dajjal (Antichrist).

A conflict arises regarding the ruination of Medina before the Dajjal, given that the Dajjal is prevented from entering it. Ibn Kathir responded by stating that Medina will not be completely ruined before the Dajjal emerges. Rather, the flourishing of Jerusalem will be a cause for the ruination of the Prophet's city (Medina) at the end of time.