Valmiki Ramayana Yuddha Kanda Sarga 12 Shloka 8
Original Shlokaसर्वकृत्यानियुष्माभिस्समारब्धानिसर्वथा । मन्त्रकर्मनियुक्तानिनजातुविफलानिमे ।।6.12.8।।
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सर्वथा: always, युष्माभिः all of you, समारब्धानि: started, मन्त्रकर्मनियुक्तानि: that which has been well thought out and decided, मे: by me, सर्वकृत्यानि: actions carried out, जातु: that I know, नविफलानि: never futile.
"The actions carried out by me are always after it is well thought out and decided by all of you. I know that those actions have not failed."