Shiva Purana
भक्तानामप्रयत्नेन दृश्यमीश्वरमव्ययम् ॥ ब्रह्मेंद्रविष्णुरुद्राद्यैरपि देवैरगोचरम् ॥ ३६ ॥
The inexhaustible Lord is visible to His devotees without effort. It is invisible even to Brahma, Indra, Vishnu, Rudra and other demigods.
english translation
bhaktAnAmaprayatnena dRzyamIzvaramavyayam ॥ brahmeMdraviSNurudrAdyairapi devairagocaram ॥ 36 ॥
hk transliteration by Sanscript