उपमितिभवप्रपंचकथा - मूढः

अकार्यवारणोद्युक्तो मूढे यः परिखिद्यते ।
वाग्विस्तरो वृथा तस्य भस्मन्याज्याहुतिर्यथा ॥

- उपमितिभवप्रपंचकथा

akArya vAraNOdyuktaH mUDhe yaH parikhidyate ।
vAgvistaro vRuthA tasya bhasman yAji AhutiH yathA ॥

- upamitibhavaprapanchakathA

No matter how well you explain to an idiot how to avoid a disaster, it does not bear fruits. He will walk straight into the disaster. It is like pouring ghee over ashes in a pyre (it can not kindle fire, neither is it useful).

- Upamitibhavaprapanchakatha