Bhagavad Gita 15.1श्री भगवानुवाचऊर्ध्वमूलमधःशाखमश्वत्थं प्राहुरव्ययम्।छन्दांसि यस्य पर्णानि यस्तं वेद स वेदवित् ॥

The description of the universe as a peepul tree is only metaphorical. This peepul is said to be eternal because it cannot be cut except by the axe of knowledge.All persons depend upon the Lord for the fruits of their actions, because He alone knows the right relation between the actions and their fruits. He alone is the dispenser of the fruits of actions of human beings. The wise persons also depend upon the Lord for the fruit of their knowledge. The Lord alone removes the veil of ignorance through His grace and mercy. The inclination for Advaita Vedantic Sadhana arises through the Lords grace. The desire for the realisation of the Oneness is produced in the minds of wise men by the grace of the Lord, which is the antidote to all fears. (Avadhuta Gita, I.1)Those who serve the Lord with unswerving or singleminded devotion go beyond the three alities of Nature through His grace. They attain knowledge of the Self through the grace of the Lord and get release from the round of birth and death. Those who have a right understanding of the real nature of Brahman or the Supreme Being also get emancipation easily.The Lord teaches Arjuna in this discourse about the real nature of Brahman or the Supreme Self and the path that leads the soul to union with Him