Valmiki Ramayana Kishkindha Kanda Sarga 35 Shloka 2
Original Shlokaनैवं लक्ष्मण वक्तव्यो नायं परुषमर्हति। हरीणामीश्वरश्श्रोतुं तव वक्त्राद्विशेषतः।।4.35.2।।
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लक्ष्मण Lakshmana, अयम् this, हरीणामीश्वरः king of vanaras, एवम् in that way, न वक्तव्यः not speak, विशेषतः specially, तव your, वक्त्रात् your words, परुषम् harsh, श्रोतुम् to listen, नार्हति not deserve.
'O Lakshmana you, in particular, should not speak to the king of vanaras in that manner. He does not deserve to hear from your mouth words which are harsh.