Bhagavad Gita 5.6

संन्यासस्तु महाबाहो दुःखमाप्तुमयोगतः।योगयुक्तो मुनिर्ब्रह्म नचिरेणाधिगच्छति॥

saṃnyāsastu mahābāho duḥkhamāptumayogataḥ |yogayukto munirbrahma nacireṇādhigacchati ||

But, O mighty-armed Arjuna, renunciation is hard to attain without Yoga; the sage who is in harmony with Yoga quickly goes to Brahman.

Without concentration, O Mighty One, renunciation is difficult. But the sage who is always meditating on the Divine, shall soon attain the Absolute.

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