Valmiki Ramayana Aranya Kanda Sarga 44 Shloka 19
Original Shlokaस प्राप्तकालमाज्ञाय चकार च तत स्वनम्। सदृशं राघवस्येह हा सीते लक्ष्मणेति च।।3.44.19।।
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ततः then, सः Maricha, प्राप्तकालम् the right time, आज्ञाय having realised, राघवस्य Rama's, सदृशम् similar, हा सीते Alas, Sita, लक्ष्मण Lakshmana, इति च like that, स्वनम् a sound, चकार released.
Then Maricha realised that the appropriate time had come. In a voice similar to Rama's, he shouted loudly 'Alas Sita, Alas Lakshmana '