Ramayana
पुण्येन हयमेधेन मामिष्ट्वा पाकशासनः । पुनरेष्यति देवानामिन्द्रत्वमकुतोभयम् ॥ 7-85-21 ॥
Having worshipped me with the meritorious horse-sacrifice, Pakashasana (Indra), the chastiser of Paka, shall once again attain the lordship of the gods, free from any fear.
english translation