Bhagavad-gītā As It Is · Text 15.1
The inverted banyan tree of material existence
श्रीभगवानुवाच
ऊर्ध्वमूलमध:शाखमश्वत्थं प्राहुरव्ययम् ।
छन्दांसि यस्य पर्णानि यस्तं वेद स वेदवित् ॥ १ ॥
śrī-bhagavān uvāca
ūrdhva-mūlam adhaḥ-śākham
aśvatthaṁ prāhur avyayam
chandāṁsi yasya parṇāni
yas taṁ veda sa veda-vit
The Supreme Personality of Godhead said: It is said that there is an imperishable banyan tree that has its roots upward and its branches down and whose leaves are the Vedic hymns. One who knows this tree is the knower of the Vedas.
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