Shiva Purana

siva.sh/siva-purana/saturda-samhita/22/12

तद्भुजैस्स परिभ्रष्टः पतितो मंदरो गिरिः ।। सहसातिगुरुस्सद्यो देवदैत्योपरि ध्रुवम्।। १२।।

sanskrit

Slipping from their arms the Mandara became very heavy suddenly and fell over the gods and the Asuras.

english translation

tadbhujaissa paribhraSTaH patito maMdaro giriH || sahasAtigurussadyo devadaityopari dhruvam|| 12||

hk transliteration by Sanscript