It is narrated from Sayyiduna Ma'qil bin Yasar (may Allah be pleased with him), he says: I was present with Sayyiduna Abu Bakr Siddiq (may Allah be pleased with him) in the service of the Prophet (peace and blessings of Allah be upon him), so the Prophet (peace be upon him) said: "O Abu Bakr! Indeed, shirk (associating partners with Allah) comes among you more hidden than the crawling of an ant." Sayyiduna Abu Bakr (may Allah be pleased with him) said: Is there shirk other than associating someone with Allah? The Prophet (peace be upon him) said: "By the One in Whose hand is my soul, indeed shirk enters in a way more hidden than the crawling of an ant. Shall I not guide you to such words that when you say them, all minor and major shirk will be removed from you?" The Prophet (peace be upon him) said: "Say: O Allah! I seek refuge in You from knowingly associating partners with You, and I seek Your forgiveness for what I do not know."