Valmiki Ramayana Ayodhya Kanda Sarga 102 Shloka 12
Original Shlokaसमाप्तवनवासं मामयोध्यायां परन्तप। कोऽनु शासिष्यति पुनस्ताते लोकान्तरं गते।।2.102.12।।
1 source checked for this shloka
परन्तप O subduer of enemies, Bharata, ताते with father, लोकान्तरम् to the other world, गते having gone to, समाप्तवनवासम् on completion the exile, माम् me, पुनः again, अयोध्याम् in Ayodhya, कः who, अनुशासिष्यति guide.
O subduer of enemies, when father has gone to the other world, who will guide me in Ayodhya after I complete my term of exile?