Suleiman is also the Resident Scholar of the Valley Ranch Islamic Center and the Co-Chair Emeritus of Faith Forward Dallas at Thanks-Giving Square.

He co-founded the East Jefferson Interfaith Clergy Association and received an award for outstanding civic achievement from the mayor and city council of New Orleans in 2010.

[10] He was (as of May 2019[update]) Adjunct Professor of Islamic Studies at Southern Methodist University, where he was also a member of the Maguire Ethics Center Advisory Board.

[11][12] He is (as of September 2022[update]) Resident Scholar of the Valley Ranch Islamic Center and co-chair of Faith Forward Dallas at Thanks-Giving Square.

He also "considers [himself] a student of Malcolm X" and believes that "his most important contribution to the revolution is his idea that the greatest casualty of the subjugation of African Americans was the loss of black consciousness."

[24] In March 2017, ISIS published a propaganda film, Kill The Apostate Imams, that called for the assassination of Suleiman and a number of other prominent Islamic scholars based in the Western world.

"[25] Suleiman's work in the fields of community service, interfaith dialogue, and social justice led to his award for outstanding civic achievement from the mayor and city council of New Orleans in 2010.

[28][29] On May 9, 2019, Suleiman served as the congressional guest chaplain at the invitation of U.S. Representative Eddie Bernice Johnson and delivered the day's opening invocation.