Shiva Purana
विस्तरासुतराबोधिन्याप्यायिन्यपराः पुनः ॥ उषा प्रभा तथा प्राज्ञा संध्या चेत्यपि शक्तयः ॥ १०४ ॥
Others were again able to understand the details of the Vedas. The energies are also called Usha, Prabha, Prajna and Sandhya.
english translation
vistarAsutarAbodhinyApyAyinyaparAH punaH ॥ uSA prabhA tathA prAjJA saMdhyA cetyapi zaktayaH ॥ 104 ॥
hk transliteration by Sanscript