What is the meaning of Allaah’s name al-Sayyid?

Allaah
is al-Sayyid (the Master), i.e., the Sovereign of the universe; all
of creation is enslaved to Him.

 Allaah
is the One Who is needed in an absolute sense. No created being is independent
of Him. If He did not create them, they would not exist, and if He did
not sustain them after creating them, they would not remain. If He did
not help them with all that they are faced with, they would have no
help besides Him. So it is His right that His created beings should
call Him, and none other, al-Sayyid.