Valmiki Ramayana Ayodhya Kanda Sarga 21 Shloka 8
Original Shlokaयावदेव न जानाति कश्चिदर्थमिमं नरः। तावदेव मया सार्धमात्मस्थं कुरु शासनम्।।2.21.8।।
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कश्चित् any one, नरः man, इमम् अर्थम् this information, यावदेव until, न जानाति does not come to know, तावदेव before that period, मया साधे with my assistance, शासनम् authority (over the kingdom ), आत्मस्थम् under your control, कुरु do (assume).
Before this news is known to any one bring the kingdom under your control with my assistance.