Are the categories of tawhid (the oneness of Allah) mentioned in the Noble Qur'an?

Question:
May Allah reward you. This questioner says, may Allah preserve you: What do you say to the one who expressed reservations about the categories of tawhid, claiming that they are not mentioned in the Qur'an or the Sunnah, may Allah preserve you?

Answer:
Glory be to Allah! This is someone who reads the Qur'an, or has it read to him, but does not understand it, or he understands it but has a desire (hawa) [for something else]. The categories of tawhid are full in the Qur'an, because the verses that speak about the attributes of Allah and His actions are in tawhid al-rububiyyah (oneness of lordship). The verses that speak about the deeds of the servants and the worship of the servants, and that it is obligatory to make it sincere for Allah the Mighty and Majestic, and that they are forbidden from shirk (associating partners with Allah), this is in tawhid al-uluhiyyah (oneness of worship). The verses that contain the descriptions of the Lord and His names, these are in tawhid al-asma' wa al-sifat (oneness of the names and attributes). Look at His saying, Blessed and Exalted is He, in Surat al-Nas: "The Lord of mankind, the Master of mankind," this is in tawhid al-rububiyyah. "The God of mankind," this is in tawhid al-uluhiyyah. And likewise in Surat al-Fatihah, which this denier and this ignorant person recites, in Surat al-Fatihah: "The Most Merciful, the Bestower of Mercy," this is in tawhid al-rububiyyah and tawhid al-asma' wa al-sifat. "The Master of the Day of Judgment," likewise in tawhid al-rububiyyah. This is in tawhid al-uluhiyyah, because worship and seeking help are types of seeking help and supplication for the fulfillment of needs and the relief of distress, all of which is in tawhid al-uluhiyyah.