VANITY H 491 "The truest thing a poet has ever said is the saying of Labid: 'Everything except Allah is vain.'" R 491 Bukhari and Muslim with a chain up to Abu Hurairah who related that the Prophet, praise and peace be upon him, said this.
489- وعن أَبي هريرة رضي الله عنه ، عن النبي صلى الله عليه وآله وسلم ، قَالَ : "أصْدَقُ كَلِمَةٍ قَالَهَا شَاعِرٌ كَلِمَةُ لَبِيدٍ : ألاَ كُلُّ شَيْءٍ مَا خَلاَ اللهَ بَاطِلُ" متفقٌ عَلَيْهِ .