Caliph Al-Hasan ibn ‘Ali is the grandson of which Islamic prophet?
Mujtaba Al-Mujtaba (Arabic: اَلْـمُـجْـتَـبَى‎ ‎ ) is an Arabic word which means "The Selected One" or "The Chosen One among many." It is a title of the Islamic "Nabi" (Arabic: نَـبِي‎ ‎ , Prophet) Muhammad, and his grandson, the Caliph Al-Hasan ibn ‘Ali.
Abu Bakr Ibn Sayyid al-Nās Muhammad bin Ahmad bin Abdullah bin Muhammad bin Yahya bin Muhammad bin Muhammad bin Sayyid al-Nas al-Ya'mari, better known as Abu Bakr Ibn Sayyid al-Nās, was a Medieval Muslim theologian. He was the grandfather of Fatḥ al-Din Ibn Sayyid al-Nās, though he died before ever meeting his grandson.