The destruction of the unrighteous king Rāvaņa together with all the Rākşasas, has come about in consequence of Şītā (having been carried away).
सीतानिमित्तं राज्ञस्तु रावणस्य दुरात्मनः। रक्षसां चैव सर्वेषां विनाशः समुपागतः। ४९ ।।