Brahma Sutras
ॐ तदधीनत्वादर्थवत् ॐ ॥ १-४-३॥
(Avyakta is not Pradhana) because it is dependent on that (God); (but this avyakta has to be admitted as) it serves some purpose.
english translation
OM tadadhInatvAdarthavat OM ॥ 1-4-3॥
hk transliteration by Sanscript