Bhagavad-gītā 15.3-4
BG 15.3-4
Open the full passageन रूपमस्येह तथोपलभ्यते नान्तो न चादिर्न च सम्प्रतिष्ठा । अश्वत्थमेनं सुविरूढमूलं असङ्गशस्त्रेण दृढेन छित्त्वा ॥३॥ ततः पदं तत्परिमार्गितव्यं यस्मिन्गता न निवर्तन्ति भूयः । तमेव चाद्यं पुरुषं प्रपद्ये यतः प्रवृत्तिः प्रसृता पुराणी ॥४॥
Sanskrit
na rūpam asyeha tathopalabhyate nānto na cādir na ca sampratiṣṭhā aśvattham enaṁ su-virūḍha-mūlam asaṅga-śastreṇa dṛḍhena chittvā tataḥ padaṁ tat parimārgitavyaṁ yasmin gatā na nivartanti bhūyaḥ tam eva cādyaṁ puruṣaṁ prapadye yataḥ pravṛttiḥ prasṛtā purāṇī
Translation
The real form of this tree cannot be perceived in this world. No one can understand where it ends, where it begins, or where its foundation is. But with determination one must cut down this strongly rooted tree with the weapon of detachment. Thereafter, one must seek that place from which, having gone, one never returns, and there surrender to that Supreme Personality of Godhead from whom everything began and from whom everything has extended since time immemorial.