Everything besides Allah passes
أَصْدَقُ كَلِمَةٍ قَالَهَا الشَّاعِرُ كَلِمَةُ لَبِيدٍ: أَلَا كُلُّ شَيْءٍ مَا خَلَا اللَّهَ بَاطِلٌ
Asdaqu kalimatin qalaha-sh-sha'iru kalimatu Labid: ala kullu shay'in ma khala-llaha batil.
"The truest word a poet ever said is the word of Labid: Indeed, everything besides Allah is perishing."
Narrated by Abu Hurayrah. Sahih al-Bukhari 3841, Sahih Muslim 2256
A short reflection
A total filter. What you're spending life on, will it survive that sentence?