[Machine] Abu Ali, a man from the Banu Kahil tribe, narrated: Abu Musa al-Ash'ari delivered a sermon and said, "O people, beware of this shirk (associating partners with Allah), for it is more concealed than the crawl of an ant." Abdullah ibn Hazn and Qais ibn al-Mudarib stood up and said, "By Allah, we shall either refute what you have said or we will go to Umar for permission to leave." Abu Musa replied, "Rather, I will retract what I said. The Messenger of Allah ﷺ once delivered a sermon and said, 'O people, beware of this shirk, for it is more concealed than the crawl of an ant.' They asked him, 'If it is more concealed than the crawl of an ant, O Messenger of Allah, how can we guard against it?' He replied, 'Say, O Allah, we seek refuge in You from knowingly associating partners with You, and we seek Your forgiveness for what we do not know.'"  

عَنْ أَبِي عَلِيٍّ رَجُلٍ مِنْ بَنِي كَاهِلٍ قَالَ خَطَبَنَا أَبُو مُوسَى الْأَشْعَرِيُّ فَقَالَ يَا أَيُّهَا النَّاسُ اتَّقُوا هَذَاالشِّرْكَ؛ فَإِنَّهُ أَخْفَى مِنْ دَبِيبِ النَّمْلِ فَقَامَ إِلَيْهِ عَبْدُ اللهِ بْنُ حَزْنٍ وَقَيْسُ بْنُ المُضَارِبِ فَقَالَا وَاللهِ لَتَخْرُجَنَّ مِمَّا قُلْتَ أَوْ لَنَأْتِيَنَّ عُمَرَ مَأْذُونٌ لَنَا أَوْ غَيْرُ مَأْذُونٍ قَالَ بَلْ أَخْرُجُ مِمَّا قُلْتُ خَطَبَنَا رَسُولُ اللهِ ﷺ ذَاتَ يَوْمٍ فَقَالَ أَيُّهَا النَّاسُ اتَّقُوا هَذَا الشِّرْكَ؛ فَإِنَّهُ أَخْفَى مِنْ دَبِيبِ النَّمْلِ فَقَالَ لَهُ مَنْ شَاءَ اللهُ أَنْ يَقُولَ وَكَيْفَ نَتَّقِيهِ وَهُوَ أَخْفَى مِنْ دَبِيبِ النَّمْلِ يَا رَسُولَ اللهِ؟ قَالَ قُولُوا اللهُمَّ إِنَّا نَعُوذُ بِكَ مِنْ أَنْ نُشْرِكَ بِكَ شَيْئًا نَعْلَمُهُ وَنَسْتَغْفِرُكَ لِمَا لَا نَعْلَمُ