Brahma Sutras
ॐ योगिनः प्रति स्मर्यते स्मार्ते चैते ॐ ॥ ४।२।२१॥
And these times etc., are mentioned in the Smriti for the Yogins; and these (paths of) Samkhya and Yoga are mentioned in the Smritis and not the Vedas.
english translation
OM yoginaH prati smaryate smArte caite OM ॥ 4।2।21॥
hk transliteration by Sanscript