Mahabharata 6.4.6
हन्यात्स एव यो हन्यात्कुलधर्मं स्वकां तनुम्कालेनोत्पथगन्तासि शक्ये सति यथापथि
hanyātsa eva yo hanyātkuladharmaṃ svakāṃ tanumkālenotpathagantāsi śakye sati yathāpathi
Our plain-language meaning of this verse is waiting for scholar review.