Al-Khadra Mosque (Arabic: مسجد الخضرة‎, transliteration: Masjid al-Khadra, translation: "the Green Mosque") also known as Hizn Sidna Yaq'ub Mosque (trans. Sadness of our Lord Jacob) is a mosque situated on the lower slopes of Mount Gerizim in the southwestern quarter of the Old City of Nablus in the West Bank.