Sanctity of the idol
The idol of Guruvayur temple is unique, since it is carved out of "Paathalanjana
Sila", and is considered extremely sacred. This idol was once worshipped by Mahavishnu
in Vaikunta. Vishnu handed it over to Brahma. King Suthapas and his wife who worshipped
Bhrama for a child received this idol from Brahma. He advised them to 2 start worshipping
the idol. Once Lord Vishnu appeared before them and blessed them that he himself
will be born as their child in their three re-births in three different forms and
in three different situations. Thus they got the good fortune to worship the same
deity in all three rebirths. They gave birth to Prasnigarbhan who gave to the world
the practice of Brahmacharya Vratha (Celibacy) . In their next birth, Suthapas and
his wife were born as Kashyapa and Adithi . Their son in that birth was Vamana.
The third rebirth was as Vasudeva and Devaki. The Lord Krishna was born as their
eighth son. In the long run , the Lord Krishna himself installed this idol in Dwaraka
and worshipped it.