Shiva Purana
उपमन्युरुवाच ॥ त्वयैवं कथितं सर्वं भवनिंदारतेन वै ॥ प्रसंगादेव देवस्य निर्गुणत्वं महात्मनः ॥ २१ ॥
Upamanyu said:— You have said all these things in your eagerness to disparage Śiva. In that context you have mentioned the Nirguṇatva of the great lord.
english translation
upamanyuruvAca ॥ tvayaivaM kathitaM sarvaM bhavaniMdAratena vai ॥ prasaMgAdeva devasya nirguNatvaM mahAtmanaH ॥ 21 ॥
hk transliteration by Sanscript