Ramayana
ददर्श राक्षसश्रेष्ठं यथान्यायमुपेत्य सः । पूजयमास धर्मेण रावणं राक्षसाधिपम् ॥ 7-25-50 ॥
Approaching in due form, he beheld the foremost of the rakshasas, and with proper observance he honored Ravana, the lord of the rakshasas.
english translation