Valmiki Ramayana Ayodhya Kanda Sarga 17 Shloka 21

सः दशरथात्मजः that son of Dasaratha, सर्वाः all, कक्ष्याः enclosures, समतिक्रम्य having crossed over, सर्वं जनम् all followers, सन्निवर्त्य having sent them, शुद्धान्तःपुरम् the private apartment, अभ्यगात् reached.

Crossing the courtyards on his way Rama sent back his followers and entered the private apartment of the king.