In his work, Hammad uses the geometry of elementary forms to express the dynamic spirit of the Arabic letter.

Among circles, squares, rectangles, determined by the color, the letter appears with liberty to end a profound silence.

His work has been shown in exhibitions at museums such as the Jordan National Gallery of Fine Arts.

This use of Arabic calligraphy as a graphic form places him within the Hurufiyah Art Movement.

[4] The art historian, Wijdan Ali describes his style of painting as 'Abstract Calligraphy' within the Hurufiyya movement.