Zayn al-Dīn al-Juba'ī al'Amilī (Arabic: زين الدين الجبعي العاملي; 1506-1559), also known as ash-Shahīd ath-Thanī (Arabic: الشهيد الثاني, ʾash-Shahīd ath-Thānī, lit.
Thani studied under both Sunni and Shi'a scholars in Jabal 'Amel, Damascus, Cairo, Jerusalem.
In 1536, he moved to Egypt, where he learned Usul al-Fiqh, geometry, prosody, medicine and logic.
[1] In 1543, he traveled to Constantinople and met with Muhammad bin Muhammad bin Qāḍī Zāda al-Rūmī, with whom he shared multiple treatises relating to several subjects, including mathematics, astronomy and religion.
His Magnum opus is the first commentary of The Damascene Glitter by Shahid Awwal called The Beautiful Garden in Interpreting the Damscene Glitter (Arabic: ar-Rawda-l-Bahiyah fi Sharh allam'a-d-Dimashqiya الروضة البهيّة في شرح اللمعة الدمشقيّة ).