Valmiki Ramayana Aranya Kanda Sarga 16 Shloka 33
Original Shlokaजितस्स्वर्गस्तव भ्रात्रा भरतेन महात्मना। वनस्थमपि तापस्ये यस्त्वामनुविधीयते।।3.16.33।।
1 source checked for this shloka
यः who, वनस्थमपि dwelling in the forest, त्वाम् yourself, तापस्ये in adopting asceticism, अनुविधीयते faithfully follows, तव भ्रात्रा your brother, महात्मना great self, भरतेन by Bharata, स्वर्गः heaven, जितः won.
Although you dwell in the forest, your great brother Bharata has won the kingdom of heaven by faithfully adopting your asceticism.