Valmiki Ramayana Sundara Kanda Sarga 51 Shloka 43
Original Shlokaसर्वलोकेश्वरस्यैवं कृत्वा विप्रियमुत्तमम्। रामस्य राजसिंहस्य दुर्लभं तव जीवितम्।।5.51.43।।
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सर्वलोकेश्वरस्य of the lord of all worlds, राजसिंहस्य of a lion among kings, रामस्य Rama's, एवम् in this, उत्तमम् great, विप्रियम् offence, कृत्वा having done, तव your, जीवितम् life, दुर्लभम् is difficult to sustain.
"Rama is the supreme lord of all worlds, a lion among kings. Having pained him it is very difficult for you to sustain your life after offending him to this extent.