Shiva Purana
तासु सर्वासु युगपत्प्रवेशाय शिशोर्धिया ॥ वागीशान्यां यथान्यायं शिष्यात्मानं निवेशयेत् ॥ १२ ॥
In order to facilitate the simultaneous entry into all of them, he shall deposit the Ātman of the disciple along with his mind into Vāgīśānī duly.
english translation
tAsu sarvAsu yugapatpravezAya zizordhiyA ॥ vAgIzAnyAM yathAnyAyaM ziSyAtmAnaM nivezayet ॥ 12 ॥
hk transliteration by Sanscript