Bhagavad Gita 15.1

श्रीभगवानुवाच The Blessed Lord said

ऊर्ध्वमूलमधःशाखमश्वत्थं प्राहुरव्ययम्।छन्दांसि यस्य पर्णानि यस्तं वेद स वेदवित् ॥१५.१॥

ūrdhvamūlamadhaḥśākhamaśvatthaṃ prāhuravyayamchandāṃsi yasya parṇāni yastaṃ veda sa vedavit

The Blessed Lord said: They (the wise) speak of the indestructible peepul tree, with its roots above and branches below, whose leaves are the meters or hymns; he who knows it is a knower of the Vedas.

गीता