Valmiki Ramayana Ayodhya Kanda Sarga 103 Shloka 4
Original Shlokaइदं तेषामनाथानां क्लिष्टमक्लिष्टकर्मणाम्। वने प्राक्कलनं तीर्थं ये ते निर्विषयीकृताः।।2.103.4।।
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इदम् this one, ये ते those, निर्विषयीकृताः expelled from the country, तेषाम् their, आक्लिष्टकर्मणाम् men performing deeds with untiring energy, अनाथानाम् unfortunate ones, क्लिष्टम् sufferings, प्राक्कलनम् to the east of, वने in the forest, तीर्थम् sacred place.
This is a sacred place to the east of the forest used by the unfortunate Rama, and Lakshmana of untiring energy and Sita expelled from the country and undergoing suffering.