ألفونسو السادس ملك قشتالة
Al-Murādī was the author of the technological manuscript entitled "Kitāb al-asrār fī natā'ij al-afkār" (", The Book of Secrets in the Results of Thoughts" or "The Book of Secrets in the Results of Ideas"). It was copied and used at the court of Alfonso VI of León and Castile in Christian Spain in the 11th century.