Ramayana
अर्थिनां कार्यसिद्ध्यर्थं यस्मात्त्वं नैषि दर्शनम् । अदृश्यः सर्वभूतानां कृकलासो भविष्यसि ॥ 7-53-18 ॥
"Because you do not grant audience for the accomplishment of the petitioners' business, you shall become a lizard, invisible to all beings."
english translation