Ananth’s grandfather, a man whose skin looked like weathered parchment but whose eyes held the sparkle of a thousand scriptures, noticed his grandson’s frantic searching on his phone. "What are you hunting for, Ananth?" the old man asked.

I think you're looking for the "Punyajanam" mantra in Tamil, which is a sacred Hindu ritual. Here's some information:

உசதீரிவ மாதர: தஸ்மா அரங்கமாமயவா யஸ்ய க்ஷயாய ஜித்வத ஆயபா ஜநயதாச ந: ||

, the deity of water. According to Vedic tradition, water is naturally pure, but physical and karmic events (like birth or death) can create (impurity) in an environment.

It invokes Lord Varuna (the deity of water) and other gods to safeguard the child from negative energies and doshas .