Ganesha Purana prescribes the use of only clay idols in Vinayaka Chaturthi Puja. Sanatana Dharma is very sensitive about nature and the ecosystem. Vinayaka Chaturthi idols are to be immersed after the Puja. So ideally it has to be a material soluble in water. You can imagine the situation if thousands of wooden or metal idols are immersed in water every year. Moreover, Veda says that the earth was originally made up of clay. Clay was the prime material at the time of creation. That is yet another reason for prescribing clay.
Vasudeva represents the supreme aspect of Vishnu, associated with Krishna, symbolizing the all-pervading essence and highest reality in Vaishnavism.
Durga Saptashati - Chapter 6
ityaakarnya vacho devyaah' sa dooto'marshapooritah' . samaachasht'a samaagamya daityaraajaaya vistaraat . tasya dootasya tadvaakyamaakarnyaasuraraat....
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Sri Lakshmi Mangalashtaka Stotram
varalakshmi dhairyalakshmi shreeshod'ashabhaagyankari. mangalam shreemahaalakshmi mangalam shubhamangalam.....
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