Shiva Purana
प्रकाशवाची स भवेत्सत्प्रकाश इति स्फुटम् ॥ ज्ञानशब्दस्य पर्य्यायश्चिच्छब्दः स्त्रीत्वमागतः ॥ २७ ॥
It is clear that he who speaks of light should be the true light. The word chich, synonymous with the word knowledge, has become feminine.
english translation
prakAzavAcI sa bhavetsatprakAza iti sphuTam ॥ jJAnazabdasya paryyAyazcicchabdaH strItvamAgataH ॥ 27 ॥
hk transliteration by Sanscript