Valmiki Ramayana Ayodhya Kanda Sarga 76 Shloka 11

महाबाहो O mightyarmed one, अस्य विशांपतेः for this king, यानि those, प्रेतकार्याणि funeral rites, कर्तव्यानि are required to be done, तानि them, अविचारितम् without hesitation, अव्यग्रम् attentively, क्रियान्ताम् may be performed.

O mightyarmed prince, the funeral rites that are required to be performed for the departed king ought to be done carefully without any shortcomings.