Nasai

1؎: "Rabb" is among the Most Beautiful Names (Asma’ al-Husna) of Allah Ta'ala, the meaning of which is: the One who, after creating everything, provides for its needs and brings it to completion. Its usage without any addition (idafah) is not permissible for anyone other than the Essence of Allah. And it is precisely this Lordship (rububiyyah) that necessitates that a person worships only and exclusively Allah Ta'ala, because He alone, the Exalted and Holy, is worthy of worship. Here, the meaning and implication of accepting "Rabb" is to specify all forms of worship exclusively for this Rabb, because the polytheists (mushrikin) of Arabia and elsewhere had no objection in accepting Allah as the Creator, Owner, and Lord of the universe; their real malady was that, while accepting Allah as Rabb, Creator, and Owner, they associated others with Him in worship.

2؎: Accepting Islam as a religion means that, apart from the way of Islam, one does not adopt any other way in one's life.

3؎: Accepting Muhammad (sallallahu alayhi wa sallam) as a Prophet means that one gives precedence to his (sallallahu alayhi wa sallam) commands and prohibitions over everything else, and in every minor and major matter, accepts his ruling without any debate or objection.

4؎: Provided that he has not mixed it with shirk (polytheism), innovations (bid‘ah), nor has he fallen into evil deeds.