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.
Al-Hasan ibn 'Ali al-Barbahari Al-Ḥasan ibn ʻAlī al-Barbahārī was a Muslim theologian from Iraq. He was a scholar and jurist who played an important role in the Sunni struggle against the Shia missionaries and successfully opposed the progress of Mu'tazilism in the Abbasid Caliphate during the 10th-11th (4th-5th AH) centuries. His books are peppered with stinging remarks that place the Shias, Qadaris, Mu'tazilis and Ash'aris in an extremely negative light. He was responsible for a number of invasive pogroms and instances of sectarian violence in 10th-century Baghdad. Princeton University scholar of Islamic history Michael Cook has described al-Barbahari as a manifest demagogue.