Valmiki Ramayana Yuddha Kanda Sarga 79 Shloka 19
Original Shlokaचतुर्दशसहस्राणिरक्षसांत्वत्पिता च यः । त्रिशिरादूषणश्चापिदण्डकेनिहतामया ।।6.79.19।।
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दण्डके in Dandaka, मया by me alone, रक्षसाम् Rakshasas, चतुर्दश fourteen, सहस्राणि thousands, यः there, त्वत्पिता your father, त्रिशिराःTrisira, दूषणश्चापि and Dooshana also, निहताः were killed
"In Dandaka, fourteen thousand Rakshasas, your father, Trisira, and also Dooshana were killed by me alone."