Sahih Bukhari | Volume 9 | Hadith Number 70

Narrated by 'Abdullah
When the Verse: 'Those who believe and did not confuse their belief with wrong (worshipping others besides Allah).' (6:82) was revealed, it was hard on the companions of the Prophet and they said, "Who among us has not wronged (oppressed) himself?" Allah's Apostle said, "The meaning of the Verse is not as you think, but it is as Luqman said to his son, 'O my son! Join not in worship others with Allah, Verily! Joining others in worship with Allah is a great wrong indeed.'" (31:13)