तस्य रामस्य when Rama, वने in that forest (in the hermitage of sage Sarabhanga), वसत: was dwelling, सर्वे ऋषय: all the ascetics, वनचरैः सह along with those inhabiting the forest, असुररक्षसाम् asuras and rakshasas (seizing upon the lives), वधाय for destruction, अभ्यागमन् approached.

While Rama was dwelling in the forest (in the hermitage of sage Sarabhanga), all the ascetics along with others (sages) inhabiting the forest approached Rama requesting for the destruction of the asuras and rakshasas seizing upon their lives.