Srimad Bhagavatam Canto 09, Chapter 01, Text 18

SB 9.1.18

yuyam brahma-vido yuktas
 tapasa dagdha-kilbisah
kutah sankalpa-vaisamyam
 anrtam vibudhesv iva
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
You are all self-controlled, well balanced in mind, and aware of the Absolute Truth. And because of austerities and penances you are completely cleansed of all material contamination. Your words, like those of the demigods, are never baffled. Then how is it possible that your determination has failed?
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
We have learned from many Vedic literatures that a benediction or curse given by the demigods never proves false. By performing austerities and penances, by controlling the senses and mind, and by achieving full knowledge of the Absolute Truth, one is fully cleansed of material contamination. Then one’s words and blessings, like those of the demigods, are never a failure.
Srimad Bhagavatam Canto 09, Chapter 01, Text 17
Srimad Bhagavatam Canto 09, Chapter 01, Text 19