Verse
अज्ञश्चाश्रद्दधानश्च संशयात्मा विनश्यति ।नायं लोकोऽस्ति न परो न सुखं संशयात्मनः ॥
The ignorant who has not faith, the soul of doubt goeth to perdition; neither this world, nor the supreme world nor any happiness is for the soul full of doubts.
Gītā 4·40