Srimad-Bhagavatam: Canto 9 - Chapter 1 - Verse 34
Sanskrit:
गोमूत्रयावकं श्रुत्वा भ्रातरं वल्कलाम्बरम् ।महाकारुणिकोऽतप्यज्जटिलं स्थण्डिलेशयम् ॥ ३४ ॥
ITRANS:
go-mūtra-yāvakaṁ śrutvābhrātaraṁ valkalāmbarammahā-kāruṇiko ’tapyajjaṭilaṁ sthaṇḍile-śayam
Translation:
Upon reaching Ayodhyā, Lord Rāmacandra 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 kuśa. The most merciful Lord very much lamented this.