Valmiki Ramayana Sundara Kanda Sarga 26 Shloka 39

लक्ष्मणपूर्वजः elder brother of Lakshmana, सः रामः that Rama, माम् me, जीवतीम् living, नाजानात् he is not aware तौ both of them, जानन्तौ if they had known, मम my, मार्गणम् search, उर्व्याम् on earth, न कुर्याताम् इति न not undertake.

"Neither Lakshmana nor his elder brother knows that I am here alive. (Had they known) both of them would have ransacked this earth.