Brahma Sutras
ॐ अतश्चायनेऽपि दक्षिणे ॐ ॥ ४।२।२०॥
For the very same reason (the soul gets the result of knowledge) even when departing during the sun’s southern course.
english translation
OM atazcAyane'pi dakSiNe OM ॥ 4।2।20॥
hk transliteration by Sanscript