Skandapurana 2.5.14.60

2.5.14.60

pūrvaṃ ca bahvṛce dadyācchāṃdogye dakṣiṇaṃ tathā ..

He should give the eastern [jar] to a Ṛgvedic priest, and likewise the southern to a Chāndogya [Sāmavedic priest];