Bhagavad Gita 2.72
O Arjuna! This is the state of the Self, the Supreme Spirit, to which, if one attains, it shall never be taken away. Even at the time of leaving the body, one will remain firmly enthroned there and become one with the Eternal.
एषा ब्राह्मी स्थितिः पार्थ नैनां प्राप्य विमुह्यति।
स्थित्वाऽस्यामन्तकालेऽपि ब्रह्मनिर्वाणमृच्छति॥eṣā brāhmī sthitiḥ pārtha naināṃ prāpya vimuhyati|
sthitvā'syāmantakāle'pi brahmanirvāṇamṛcchati||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).