This question already has an answer here:
For example, Varaha Purana
To cap it all, Chapter 58 (Saubhagya Vrata) corroborates this point unequivocally - we have seen this already.
yA shrIH sA girijA proktA yo hariH sa trilocanaH || 3 || evaM sarveShu shAstreShu purANeShu ca gadyate |
etasmAd anyathA yastu brute shAstraM pRRithak tayA || 4 || rudro janAnAM martyAnAM kAvyaM shAstraM na tad bhavet |
viShNuM rudra kRRitaM brUyAc ChrIr gaurIti nigadyate || 5 || etayor antaraM brUyAt so .adhametyucyate janaiH |
taM nAstikaM vijAnIyAt sarva-dharma bahiShkRRitam || 6 || Meaning: Lakshmi is identical with Girija and Hari is identical with three-eyed Rudra. It is so declared in all Shastras and Puranas. Any Shastra or Kavya which states otherwise is not worthy of its name. Vishnu should be considered as Rudra and Lakshmi as Gauri. He who speaks of difference between them is lowly (Adhama) among people and should be considered an atheist outside the field of Dharma.)