Valmiki Ramayana Kishkindha Kanda Sarga 65 Shloka 31
Original Shlokaस हि प्रसादे चात्यर्थं कोपे च हरिरीश्वरः। अतीत्य तस्य सन्देशं विनाशो गमने भवेत्।।4.65.31।।
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सः he, हरिः monkey king, प्रसादे च in showering grace, कोपे च and vent anger, अत्यर्थम् highly, ईश्वरः all powerful, तस्य his, सन्देशम् instruction, अतीत्य in not fulfilling the task, गमने in going, विनाशः total destruction, भवेत् will be.
'The monkey king has the authority to shower grace or give vent to his anger. If we go without fulfilling the task we will face destruction.