They examined the leaf to find it in the same condition as had been described.

According to an authentic narration, the Noble Messenger (Upon whom be blesssings and peace) said: “There will be a big epidemic during the conquest of Jerusalem.”(85) When Jerusalem was conquered during the Caliphate of ‘Umar, a widespread epidemic caused in three days the death of about seventy thousand people.

Again, according to an authentic narration, the Prophet (PBUH) predicted that Basra(86) and Baghdad(87) would come into existence, which at that time had not been founded, that the treasure of the world would enter Baghdad, and that the Turks and the people living on the shores of the Caspian Sea would do battle with the Arabs and that the majority of them would later enter the fold of Islam,(88) and that among the Arabs they would come to dominate them. He said: “The Persians [non-Arabs] will almost predominate among you, consuming your booty and smiting you.”(89)

----------------------------------
(85) Bukhari, Tibb 30; Khiyal 13; Muslim, Salam 98, 100; Muwatta’, Madina 22, 24; Musnad iv, 195-6; Bayhaqi, Dala’il al-Nubuwwa vi, 383; Suyuti, al-Khasa’is al-Kubra, ii, 477-8.
(86) al-Albani, Sahih al-Ja\mi^ al-Saghir vi, 268 no: 7736; Tabrizi, Mishkat al-Masabih no: 5433.
(87) Qadi Iyad, al-Shifa: i, 344; Ali al-Qari, Sharh al-Shifa: i, 703; Ibn Kathir, al-Bidaya wa’l-Nihaya x, 102; Tabrizi, Mishkat al-Masabih no: 5433.
(88) Bukhari, Muslim, Abu Da’ud, Tirmidhi, and Ibn Maja narrated it. See, Tabrizi, Mishkat al-Masabih vi, 173.
(89) Qadi Iyad, al-Shifa: i, 341; al-Khafaji, Sharh al-Shifa: iii, 194; ‘Ali al-Qari, Sharh al-Shifa: i, 692; al-Haythami, Majma’ al-Zawa’id vii, 310; al-Hakim, al-Mustadrak iv, 519; Musnad ii, 288, 296, 304, 324, 377, 520, 536; iv, 66; v, 38.