Translation of the verse 106 from Surah Yusuf : Number of verses 111 - - page 248 - Part 13.
And most of them believe not in Allah except that they attribute partners unto Him [i.e. they are Mushrikun -polytheists - see Verse 6:121].
And most of them believe not in Allah except while they associate others with Him.
(12:106) So, most of them who believe in Allah join other deities also with Him. *76
*76) They associate other deities with Allah because they do not pay heed to His Signs, which serve as pointers to the Right Way. So they go astray from it and get lost in thorny bushes. Nevertheless, many of them do not lose sight of the Reality entirely, and do not disbelieve in Allah as their Creator and Sustainer,but they get involved in shirk. That is, they do not deny the existence of God, but they believe that there arc other deities who are also partners in His Being, His Attributes, His Powers, and His Rights. They should never have been involved in shirk, had they considered these Signs in the heavens and the earth from this point of view, for in that case they would have discovered everywhere, in each and every one of them, the proofs of the Oneness of Allah.
Source : Yusuf Verse 106: And most of them believe not in Allah except while they associate others with Him.