Valmiki Ramayana Bala Kanda Sarga 60 Shloka 3
Original Shlokaयथाऽयं स्वशरीरेण स्वर्गलोकं गमिष्यति।।1.60.3।। तथा प्रवर्त्यतां यज्ञे भवद्भिश्च मया सह।
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अयम् this (king), स्वशरीरेण with his physical body, स्वर्गलोकम् to heaven, यथा in whichever manner, गमिष्यति will go, तथा in that manner, भवद्भि: by you, मया सह along with me, यज्ञ: sacrifice, प्रवर्त्यताम् be performed.
Join me in the performance of this sacrifice in a manner by which he (Trisanku) attains heaven with his physical body".