Quatrain 119 from Rubaiyat of Omar Khayyam

In Quatrain 119 from Rubaiyat of Omar Khayyam, Khayyam says: I have solved many problems, from calculating the mass of a dust particle to the orbit of Saturn, I have solved many problems with cunning. Only one problem I couldn't solve: Death.

از جرم گل سیاه تا اوج زحل
کردم همه مشکلات گردون را حل

بگشادم بندهای مشکل به حیل
هر بند گشاده شد بجز بند اجل

Here's the translation of the quatrain from Omar Khayyam to English:
From the mass of black dust to Saturn's peak,
I've solved all universal problems with a tweak.

With cunning, I've untied the knots of strife,
Every knot untied but the knot of life.
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