इयत्तया परिच्छिन्ने देहे यद्वक्षसोऽन्तरम् ।हेयं तद्धृदयं विद्धि तनावेकतटे स्थितम्
In plain words
In this body, bounded by fixed measure, whatever lies within the chest -- know that to be the heart that is to be rejected, situated on but one side of the body.