Aaraattu

Ārāttu (pronounced [aːraːʈʈə]) is an annual ritual performed during Hindu temple festivals in Kerala, India, in which a priest bathe the idol of a deity by dipping it in a river or a temple tank.

[1] One of the important Arattu in Kerala is conducted at Padmanabhaswamy Temple, Thiruvananthapuram by Travancore royal family, procession is carried out to Shankumugham Beach for the ceremony.

[2][3] The operations at the Trivandrum International Airport stops twice a year for the procession to pass through the runway to the Shankumugham Beach.

[4] At Ambalappuzha Sree Krishna Swamy Temple, the festival starts with a flag hoisting, after bathing the deities, ambalappuzha palpayasam (a sweet pudding) is offered to the gods.

[1] The eight-day long festival at Sree Poornathrayeesa Temple, Thrippunithura is concluded with an aaraattu.

Bathing the idol at an ārāttu
Ārāttu at temple tank of Veerabhadra temple, Kasaragod