One verse

Bhagavad Gita 8.13

8.13

ओमित्येकाक्षरं ब्रह्म व्याहरन्मामनुस्मरन् | यः प्रयाति त्यजन्देहं स याति परमां गतिम् ||८-१३||

omityekākṣaraṃ brahma vyāharanmāmanusmaran . yaḥ prayāti tyajandehaṃ sa yāti paramāṃ gatim ||8-13||

oṁ
the combination of letters oṁ (oṁ-kāra)
eka-akṣaram
the one syllable
brahma
absolute
vyāharan
vibrating
mām
Me (Kṛṣṇa)
anusmaran
remembering
yaḥ
anyone who
prayāti
leaves
tyajan
quitting
deham
this body
saḥ
he
yāti
achieves
paramām
the supreme
gatim
destination

After being situated in this yoga practice and vibrating the sacred syllable oṁ, the supreme combination of letters, if one thinks of the Supreme Personality of Godhead and quits his body, he will certainly reach the spiritual planets.