 The thulûth style of calligraphy is mainly used in architecture.He also favoured nask and nasta'liq scripts.Sometimes he combined Baghdadi script with the more modern Ottoman style of calligraphy 

In 1961 he published "The Methods of Arabic Calligraphy" (also known as the "Rules of Calligraphy"); a work that has been described as the "finest collection of Arabic fonts in the Arab and Islamic world."