A sober person, even when harassed by other living beings, should understand that his aggressors are acting helplessly under the control of God, and thus he should never be distracted from progress on his own path. This rule I have learned from the earth.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
भूतैराक्रम्यमाणोऽपि धीरो दैववशानुगैः । तद्विद्वान्न चलेन्मार्गादन्वशिक्षं क्षितेर्व्रतम्
bhūtairākramyamāṇo'pi dhīro daivavaśānugaiḥ | tadvidvānna calenmārgādanvaśikṣaṃ kṣitervratam
SB 11.7.37