Jaiminīya Upaniṣad Brāhmaṇa 3.6.6

3.6.6

ya u ha vā abandhur bandhumat sāma veda yatra hāpy enaṃ na vidur yatra roṣanti yatra parīva cakṣate tad dhāpi śraiṣṭhyam ādhipatyam annādyam purodhām paryeti /

And he who knows the sāman having relatives though having no relative—even where they do not know him, where they are angry with him, where they speak ill of him—even there he attains pre-eminence, overlordship, abundance of food, and priesthood.