Q. How does the testimony La Ilaha Illallah (None has the right to be worshipped except Allah) include all types of Tawheed?

A. It includes all types of Tawheed either by implication or as a requirement. This is because when a person says: I testify that none is worthy of worship except Allah, it comes immediately to mind that what is intended by it is affirming Allah’s sole right to be worshipped, which is known as Tawheed Al-Uloohiyyah and this implies Tawheed Ar-Ruboobeeyyah, because every person who worships Allah Alone would not do so unless he acknowledged His Oneness in matters of Lordship. Likewise, it implies Tawheed Al-Asmaa was-Sifaat, because a person does not worship except One Whom he knows has the right to be worshipped because of the Names and Attributes which belong to Him. Ibrahim said to his father:

يَا أَبَتِ لِمَ تَعْبُدُ مَا لَا يَسْمَعُ وَلَا يُبْصِرُ وَلَا يُغْنِي عَنكَ شَيْئًا

“O my father! Why do you worship that which hears not, sees not and cannot avail you in anything? (Maryam 19:42)

So affirming Allah’s sole right to be worshipped implies Tawheed Ar-Ruboobeeyyah andTawheed Al-Asma’ was-Sifat.