Srimad-Bhagavatam: Canto 8 - Chapter 1 - Verse 29
Sanskrit:
नमुचिस्तद्वधं दृष्ट्वा शोकामर्षरुषान्वित: ।जिघांसुरिन्द्रं नृपते चकार परमोद्यमम् ॥ २९ ॥
ITRANS:
namucis tad-vadhaṁ dṛṣṭvāśokāmarṣa-ruṣānvitaḥjighāṁsur indraṁ nṛpatecakāra paramodyamam
Translation:
O King, when Namuci, another demon, saw the killing of both Bala and Pāka, he was full of grief and lamentation. Thus he angrily made a great attempt to kill Indra.