Brahma Sutras
ॐ तथा चैकवाक्योपबन्धात् ॐ ॥ ३-४-२४॥
And because (the stories) become connected (with meditations) through unity of idea in that way, (therefore they are meant for illuminating the proximate knowledge).
english translation
OM tathA caikavAkyopabandhAt OM ॥ 3-4-24॥
hk transliteration by Sanscript