Habib Abdallah bin Ali al-Hadad
The Wasilat ul-'Ibad ila Zad il-Ma'aad is a collection of Imam al-Haddad's prayers, supplications and salutations, compiled by Sayyid Alawi bin Muhammad al-Haddad. It was traditionally used by the Sada Ba Alawi as the basis to their daily invocations.