विशिष्टानां चैकपात्रं विवाहं वा हीनेभ्यो वारयेयुः ॥ कZ_११.१.१० ॥
viśiṣṭānāṃ ca ekapātraṃ vivāhaṃ vā hīnebhyo vārayeyuḥ
And they should prevent the ‘superiors’ from sharing the same table (commensality) or contracting marriages with the ‘inferiors’.
To stop durable cross-status alliances and kinship ties that would increase solidarity and reduce manipulable cleavages.