Valmiki Ramayana Ayodhya Kanda Sarga 62 Shloka 1

क्रुद्धया in anger, सशोकया afflicted with sorrow, राममात्रा by Rama's mother, एवम् in that way, परुषम् harsh, वाक्यम् words, श्रावितः was forced to hear, राजा king, दुःखितः distressed, चिन्तयामास sadly reflected.

Forced to hear the harsh words of angry Kausalya, the king, deeply distressed, was absorbed in sad thought. Sudden flash of a thought in the mind of Dasaratha about an evil act done by him in the past -- Dasaratha attributes present misfortune to the past action -- seeks forgiveness of Kausalya.