Ramayana
स वै विषयपर्यन्ते तव राजन्महातपाः । अद्य तप्यति दुर्बुद्धिस्तेन बालवधो ह्ययम् ॥ 7-74-28 ॥
That very man, O king, an ascetic of wicked mind, is now performing penance at the frontier of your realm; and it is by reason of this that this slaying of the boy has come about.
english translation