Valmiki Ramayana Bala Kanda Sarga 65 Shloka 26
Original Shlokaविश्वामित्रोऽपि धर्मात्मा लब्ध्वा ब्राह्मण्यमुत्तमम्।।1.65.26।। पूजयामास ब्रह्मर्षिं वसिष्ठं जपतां वरम्।
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धर्मात्मा virtuous, विश्वामित्र: अपि Visvamitra also, उत्तमम् excellent, ब्रह्मण्यम् brahminhood, लब्ध्वा having attained, ब्रह्मर्षिम् brahmrshi, जपताम् वरम् the best of those who recite prayers, वसिष्ठम् Vasishta, पूजयामास worshipped.
Virtuous Viswamitra also, having attained excellent brahminhood, worshipped Brahmrshi Vasishta who was the best of those who recite hymns".