In the temple

Keep the temple quiet

Speak softly, if at all. Do not shout, quarrel or hold loud conversations before the Deity.

People come to the temple for stillness, and a loud voice takes it from them. The Nectar of Devotion warns against speaking loudly, chatting, crying out and quarreling before the Deity. Temple guidelines add a simple rule: keep noise to a minimum, most of all near the sanctum.

Whose teaching
Vedic scripture; Sri Venkateswara Temple, Sydney
Where it is taught
The Nectar of Devotion, ch. 8: offenses 13 to 16; Sri Venkateswara Temple, Sydney
Source
Vedabase