Srimad Bhagavatam Canto 09, Chapter 10, Text 34

SB 9.10.34

go-mutra-yavakam srutva
 bhrataram valkalambaram
maha-karuniko ’tapyaj
 jatilam sthandile-sayam
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Upon reaching Ayodhya, Lord Ramacandra heard that in His absence His brother Bharata was eating barley cooked in the urine of a cow, covering His body with the bark of trees, wearing matted locks of hair, and lying on a mattress of kusa. The most merciful Lord very much lamented this.
Srimad Bhagavatam Canto 09, Chapter 10, Text 33
Srimad Bhagavatam Canto 09, Chapter 10, Text 35-38