to worship Allah with sincere devotion to Him, upright in faith, to establish prayer and give zakah. That is the upright religion.” 1
There are other verses as well.
3 Evidence for oneness in names and attributes includes Allah Most High’s words:
“The Most Compassionate, the Most Merciful, Master of the Day of Judgment.”
He also says:
“Say, ‘Call upon Allah or call upon the Most Merciful. Whichever name you call upon, to Him belong the most beautiful names.’” 2
And His words:
“Do you know of any equal to Him?” 3
He also says:
“Allah—there is no deity except Him. To Him belong the most beautiful names.” 4
And:
“There is nothing like Him, and He is the All-Hearing, the All-Seeing.” 5
There are also the closing verses of Surah al-Hashr and other verses.
Among the verses that encompass all three categories of oneness are the words of Allah—Blessed and Exalted is He—in Surah Maryam:
“Lord of the heavens and the earth and whatever is between them, so worship Him and persevere in His worship. Do you know of any equal to Him?” 6
The eminent scholar, Shaykh ʿAbd al-Rahmān ibn Saʿdī—may Allah have mercy on him—explains how the verse establishes this:
“… It [that is, the verse] encompasses great foundational principles: oneness in lordship—that He, Most High, is the Lord, Creator, Provider and Disposer of all things; oneness in divinity and worship—that He, Most High, is the God who is worshipped; and that His lordship necessitates worshipping Him and affirming His oneness. This is why the particle fa (‘so’), which indicates causation, appears in His words, ‘So worship Him.’ That is, just as He is the Lord of all things, He alone should truly be worshipped; so worship Him. This includes persevering in worshipping Him, Most High, which means striving against the self