Wastage of time is a great mistake

आयुषः क्षण एकोऽपि सर्वरत्नैर्न न लभ्यते।
नीयते स वृथा येन प्रमादः सुमहानहो ॥
Meaning : Even a single second in life cannot be obtained back by all precious jewels. Hence spending it wastefully is a great mistake.