Surah al-Ikhlas (Sincerity) 112 : 4

Explanatory Note

This means that no one resembles Him in anything or is equivalent to Him in any respect, either in their reality of being, in the fact that He is the only effective power, or in any of His qualities or attributes. This is implied in the statement of his being ‘One’ made in the first verse, but it is repeated so as to confirm and elaborate upon that fact. It is a renunciation of the twogod belief which implies that God is the God of Good while Evil has its own lord who, as the belief goes — is in opposition to God, spoils His good deeds and propagates evil on earth. The most well-known two-god belief was that of the Persians, who believed in a god of light and a god of darkness. This belief was known to the people in the south of the Arabian Peninsula, where the Persians once had a state and exercised sovereignty.

ڪُفُوًا Kufuw - your partner, it can also be your equal opposition in battle. Someone who is equal to you in rank, compatible with you, similar in your level. This is why it is used for marriage partners. [Ref: Nouman Ali Khan, Dream Tafsir Notes]