Caitanya-caritāmṛta 4.14
ānuṣaṅga-karma ei asura-māraṇa ye lāgi’ avatāra, kahi se mūla kāraṇa
[aanushanga-karma ei asura-maarana ye laagi’ avataara, kahi se moola kaarana]
Blended reading (Sanskrit + English inline)
ānuṣaṅga-karma ei asura-māraṇa ye lāgi’ avatāra, kahi se mūla kāraṇa
Thus the killing of the demons is but secondary work. I shall now speak of the main reason for the Lord’s incarnation.
My note
Source: vedabase.io