What do Ibn al-Shatir and Ibn Tufail have in common?
Ibn al-Shatir Ibn al-Shatir or Ibn ash-Shatir (Arabic: ابن الشاطر‎ ‎ ; 1304–1375) was an Arab astronomer. He worked as "muwaqqit" (موقت, religious timekeeper) in the Umayyad Mosque in Damascus and constructed a sundial for its minaret in 1371/72.
Al-Humaydi Imam al-Humaydi was a hafiz, faqih from Shafi'i jurisprudence scholar and Shaykh of the al-Haram. He studied under Imam Shafi'i himself in his majlis. He also studied and narrated hadith from Sufyan ibn Uyainah and Fudhail ibn Iyadh. His pupils included "Al-Aimah" such as Al-Bukhari, An-Nasa'i, At-Turmudhi, Abu Zur'a al-Razi and Abu Hatim al-Razi. He died in Mecca in 219 AH.