The Rubaiyat : Quatrain XXIII

Ah, make the most of what we yet may spend,
Before we too into the Dust descend.
Dust into Dust, and under Dust, to lie,
Sans Wine, sans Song, sans Singer, and--sans End.

This is the twenty-third quatrain of the FitzGerald's Rubaiyat. The idea in these lines is the same as one in the previous two - XXI and XXII quatrains. That our stay in this world is transitory, so live it while it lasts. The quatrain cautions that make most of your time here, on the face of the earth where you live and can spend time engaging in worldly or non-worldly  pursuits. For we are travelers here with limited time to spend. We too will turn to dust, from where we come. Dust to Dust and under the dirt we lie without the pleasure of wine, without the song and without the company of the singer (companion) and without the end, for death is going to be everlasting.