Bhagavad-gītā 8.25
BG 8.25
Open the full passageधूमो रात्रिस्तथा कृष्णः षण्मासा दक्षिणायनम् । तत्र चान्द्रमसं ज्योतिर्योगी प्राप्य निवर्तते ॥२५॥
Sanskrit
dhūmo rātris tathā kṛṣṇaḥ ṣaṇ-māsā dakṣiṇāyanam tatra cāndramasaṁ jyotir yogī prāpya nivartate
Translation
The mystic who passes away from this world during the smoke, the night, the fortnight of the waning moon, or the six months when the sun passes to the south reaches the moon planet but again comes back.