Brahma Sutras
ॐ अतस्त्वितरज्ज्यायो लिङ्गाच्च ॐ ॥ ३-४-३९॥
But as compared with this, the other one is better, because of indicatory sign (in the Upanishad and Smritis) as well.
english translation
OM atastvitarajjyAyo liGgAcca OM ॥ 3-4-39॥
hk transliteration by Sanscript