Valmiki Ramayana Kishkindha Kanda Sarga 15 Shloka 30
Original Shlokaप्रसीद पथ्यं शृणु जल्पितं हि मे न रोष मेवानुविधातुमर्हसि। क्षमो हि ते कोसलराजसूनुना न विग्रहश्शक्रसमानतेजसा4.15.30।।
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प्रसीद quieten your mind, मे my, पथ्यम् beneficial, जल्पितं word, शृणु listen, रोषमेव only anger, अनुविधातुम् follow, न अर्हसि you should not, शक्रसमानतेजसा resembling Indra in splendour, कोसलराजसूनुना with the prince of the kingdom of Kosala, ते you, विग्रहः enmity, न क्षमः हि not fit for you.
'Do not lose your temper. Quieten your mind. My advice is beneficial to you. You should not fight with the prince of Kosala who is comparable to Indra in splendour.It is not proper for you.'