Select the exact proverb ($\text{Lokokti}$) that matches the contextual meaning: "An insider who knows household secrets can cause maximum destruction/damage."

The proverb that perfectly mirrors the meaning of internal secrets causing catastrophic damage or betrayal from within is 'घर का भेदी लंका ढाए' (Ghar ka bhedi lanka dhaaye). This refers historically to Vibhishana revealing Ravana's vital life secret to Rama, which eventually led to the collapse and burning of Lanka.