Bhagavad Gita: Chapter 2/Verse 69

या निशा सर्वभूतानां तस्यां जागर्ति संयमी ।
यस्यां जाग्रति भूतानि सा निशा पश्यतो मुनेः ॥२- ६९॥

yā niśā sarvabhūtānāṃ tasyāṃ jāgarti saṃyamī ।
yasyāṃ jāgrati bhūtāni sā niśā paśyato muneḥ ॥2- 69॥

Of all beings which is the night, in that the restrained one is awakened. In that which the beings are awake, that is night of the perceiving sage. 


Word-for-word translations

yā (feminine, nominative, singular) = which

niśā (feminine, nominative, singular) = night

sarvabhūtānām (neuter, genitive, plural) = of all beings  

tasyām (pronoun, 3rd person, feminine, locative, singular) = in that

jāgarti (present indicative, 3rd person, plural) = one is awake

saṃyamī (masculine, nominative, singular) = the restrained one

yasyām (feminine, locative, singular) = in that which 

jāgrati (present indicative, 3rd person, plural) = they are awake 

bhūtāni (neuter, nominative, plural) = beings

sā (feminine, nominative, singular) = that 

niśā (feminine, nominative, singular) = night

paśyatas (present participle) (adjective) (masculine, genitive, singular) = of the perceiving  

munes (masculine, genitive, singular) = of the sage


Commentary

The driving meaning of this verse is one's involvement or non-involvement in the world of the senses. A majority of beings are awake in the world of objects, but the restrained one is "asleep" to that world. But in the world of the perceiving sage, the majority of beings are "asleep" to that world.