Tawheed ar-Ruboobiyyah: Belief in the Lordship of Allah
Tawheed ar-Ruboobiyyah means to believe that Allah alone is the Rabb (the Creator, Provider, Sustainer, etc.) He has no partner in His Dominion and Actions. Allah alone has the power to benefit or harm, the power to change destiny, and He alone is truly Self-Sufficient (As-Samad) upon whom all the creation depends, as He says: “Allah created all things and He is the Wakeel (Trustee, Disposer of affairs, Guardian) of all things.”[1] “To Him belong the keys of the Heavens and the earth. He (Allah) enlarges and restricts provisions to whomever He Wills. Surely, He has Knowledge of everything.”[2]
Tawheed ar-Ruboobiyyah also includes the belief that Allah is Unique (One, single) and Incomparable. He has no wife nor offspring, no mother nor father. “Say, He is Allah, the One and Only. Allah, the Eternal - the Absolute: He begets not, nor is He begotten.”[3] Allah does not merge in any living or dead creature, nor anything is part of Allah. Neither living nor dead merges in the Being of Allah, nor is any creature part of Him. All creatures are created by His Order and are subservient to His Will.
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[1] Soorah az-Zumar (39): 62.
[2] Soorah ash-Shoorah (42): 12.
[3] Soorah al-Ikhlas (112): 1-3