Valmiki Ramayana Sundara Kanda Sarga 62 Shloka 3
Original Shlokaअवश्यं कृतकार्यस्य वाक्यं हनुमतो मया।।5.62.3।। अकार्यमपि कर्तव्यं किमङ्ग पुनरीदृशम्।
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कृतकार्यस्य one who has accomplished the task, हनुमतः Hanuman, वाक्यम् these words, अकार्यमपि tells not to do, मया by me, अवश्यम् surely, कर्तव्यम् what is to be done, ईदृशं पुनः when he has spoken again, किमङ्ग what to say?
Even if Hanuman, the achiever, forbids me to do something, I will do it. And now when he has permitted you, why hesitate ?