Valmiki Ramayana Ayodhya Kanda Sarga 87 Shloka 19

ततः पश्चात् thereafter, सौमित्रिस्तु son of Sumitra on his part, स्वयम् himself, बर्हींषि darbha grass, आनीय having brought, राघवकारणात् for the sake of Rama, क्षिप्रम् quickly, शुभम् auspicious, स्वास्तरम् comfortable bed, अकरोत् prepared.

Therafter, the son of Sumitra (Lakshmana) himself fetched darbha grass and quickly prepared an auspicious and comfortable bed for Rama.