Shiva Purana
अत्रीश्वरश्च नाम्नासीदीश्वरः परदुःखहा ॥ गंगा सापि स्थिता तत्र तदा गर्तेथ मायया ॥ ५६ ॥
Lord Śiva, the destroyer of miseries was known as Atrīśvara. Gaṅgā too stayed in the pit by her magical power.
english translation
atrIzvarazca nAmnAsIdIzvaraH paraduHkhahA ॥ gaMgA sApi sthitA tatra tadA gartetha mAyayA ॥ 56 ॥
hk transliteration by Sanscript