Valmiki Ramayana Ayodhya Kanda Sarga 75 Shloka 11
Original Shlokaभरतं प्रत्युवाचेदं कौसल्या भृशदुःखिता।।2.75.10।। इदं ते राज्यकामस्य राज्यं प्राप्तमकण्टकम्। संप्राप्तं बत कैकेय्या शशीघ्रं क्रूरेण कर्मणा।।2.75.11।।
1 source checked for this shloka
भृशदुःखिता deeply afflicted, कौशल्या Kausalya, भरतं प्रति looking at Bharata, इदम् these words, उवाच said, राज्यकामस्य of one desirous of the kingdom, ते to you, इदम् this, अकण्टकम् without obstacles, राज्यम् kingdom, प्राप्तम् has been acquired, कैकेय्याः Kaikeyi's, क्रूरेण by crooked, कर्मणा with act, शीघ्रम् quickly, सम्प्राप्तम् secured, बत alas.
Looking at Bharata, the deeply afflicted Kausalya said, The kingdom which you had desired has been acquired without any obstacle. Alas Kaikeyi had quickly secured it for you through her crooked act.