The truest word uttered by a poet is this verse of Labid: "Behold! apart from Allah everything is vain," and Umayya b. Abu Salt was almost a Muslim.
قَالَ رَسُولُ اللَّهِ ﷺ أَصْدَقُ كَلِمَةٍ قَالَهَا شَاعِرٌ كَلِمَةُ لَبِيدٍ أَلاَ كُلُّ شَىْءٍ مَا خَلاَ اللَّهَ بَاطِلٌ وَكَادَ أُمَيَّةُ بْنُ أَبِي الصَّلْتِ أَنْ يُسْلِمَ