A spark neglected burns the house

अग्निः शेषं ऋणः शेषम्
शत्रुः शेषं तथैव च ।
पुनः पुनः प्रवर्धन्ते
तस्माच्छेषं न रक्षयेत् ॥

If fire, debts or enemies remain even in small traces, they keep growing repeatedly. That's why, one should not leave any traces.

A spark neglected burns the house.