यतश्चोत्तिष्ठेत स द्व्यंशं लभेत ॥ कZ_०३.५.०८ ॥
yataś cottiṣṭheta sa dvyaṃśaṃ labheta
He by whose effort (the common estate) is raised up/established shall receive a double share.
It aligns private effort with family wealth creation, discouraging free-riding and encouraging productive stewardship.