तस्य हैतस्य साम्नो यः प्रतिष्ठां वेद प्रति ह तिष्ठति ।तस्य वै वागेव प्रतिष्ठा ।वाचि हि खल्वेष एतत्प्राणः प्रतिष्ठितो गीयते ।अन्न इत्यु हैक आहुः ॥बृह. १,३.२७ ॥
In plain words
He who knows the foundation of this Sāman stands firm. Its foundation is speech; for founded upon speech this breath is sung. Some say the foundation is food.