Valmiki Ramayana Ayodhya Kanda Sarga 26 Shloka 34
Original Shlokaविप्रियं न च कर्तव्यं भरतस्य कदाचन। स हि राजा प्रभुश्चैव देशस्य च कुलस्य च।।2.26.34।।
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कदाचन at any time, भरतस्य of Bharata, विप्रियम् disagreeable, न कर्तव्यम् should not be done, सः he, देशस्य च of the country, कुलस्य च of the family also, राजा king, प्रभुश्चैव also the lord.
Now Bharata is the king of the country and head of the family. Therefore, you should never do anything disagreeable to him.