Valmiki Ramayana Bala Kanda Sarga 47 Shloka 10
Original Shlokaएष देशस्स काकुत्स्थ महेन्द्राध्युषित: पुरा। दितिं यत्र तपस्सिद्धामेवं परिचचार स:।।1.47.10।।
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काकुत्स्थ O Rama, एष: this one, पुरा formerly, महेन्द्राध्युषित: inhabited by Indra, स: that, देश: country, यत्र where, स: he, तप: in austerities, सिद्धाम् succeded, दितिम् Diti, एवम् this way, परिचचार attended on.
"O Descendant of Kakustha (Rama) this is that country which was formerly inhabited by Indra. Here Indra attended on Diti who achieved the fruit of her austerities.