When performing Aradhanam, a daily Pooja performed by Sri Vaishnavites, there are certain moments when one is supposed to ring a Ghantam, or bell. The bell produces an auspicious sound synonymous with "Om", which is why it is used. However, there are two ways to ring the bell depending on the circumstances.
There are two ways you can make sound with ghaNTa (Bell). One ringing it such a way that the tongue touches only one side of the ghaNTa. You have to make ghaNTa naatham like this while
- Opening the koyil aazhvar( the Divine box where PerumaL is in yoga nidra)
- While offering argyam, paadyam, and aachamaniiyam
- While doing thirumanjanam
- While offering Dhupam, Diipam
The tongue of the ghaNTa should touch both the sides of the bell while doing Harati and while offering food.
What is the reason for this difference in how the bell is rung? If the sound of the bell is auspicious, why not just ring it in the full manner all the time?