Shiva Purana

siva.sh/siva-purana/rudra-samhita/91/6

वस्तुतो निर्गुणो ब्रह्म सगुणः कारणेन सः ।। कुतो जातिर्भवेत्तस्य निर्गुणस्य गुणात्मनः ।।६।।

sanskrit

He is in fact devoid of attributes- But for some re-sons He takes up attributes. How can He have a birth, he who is really attributeless but takes up attributes?

english translation

vastuto nirguNo brahma saguNaH kAraNena saH || kuto jAtirbhavettasya nirguNasya guNAtmanaH ||6||

hk transliteration by Sanscript