Ramayana
ततो ऽश्मनगरं नाम कालकेयैरधिष्ठितम् । गत्वा तु कालकेयांश्च हत्वा तत्र बलोत्कटान् ॥ 7-23-17 ॥
Then, going to the city named Ashmanagara, which was held by the Kalakeyas, and slaying the Kalakeyas there, who were swollen with strength,
english translation