Valmiki Ramayana Bala Kanda Sarga 21 Shloka 1
Original Shlokaतच्छ्रुत्वा वचनं तस्य स्नेहपर्याकुलाक्षरम्। समन्यु: कौशिको वाक्यं प्रत्युवाच महीपतिम्।।1.21.1।।
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तस्य king Dasaratha's, स्नेहपर्याकुलाक्षरम् affectionfilled confused letters, तत् वचनम् those words, श्रुत्वा having heard, कौशिक: Visvamitra, समन्यु: with anger, महीपतिम् addressing the king, वाक्यम् words, प्रत्युवाच replied.
Out of affection towards his son, his (king Dasaratha's) plea to Viswamitra was full of contradiction. And on hearing the king, enraged Viswamitra replied: On king Dasaratha's refusal to accede to his request, Viswamitra gets enraged.