Valmiki Ramayana Aranya Kanda Sarga 26 Shloka 35
Original Shlokaचतुर्दश सहस्राणि रक्षसां भीमकर्मणाम्। हतान्येकेन रामेण मानुषेण पदातिना।।3.26.35।।
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मानुषेण by a human being, पदातिना going on foot, रामेण Rama, एकेन alone, भीमकर्मणाम् of formidable acts, रक्षसाम् demons, चतुर्दश fourteen, सहस्राणि thousands, हतानि were killed.
Fourteen thousand formidable demons were killed by Rama, a pedestrian human, singlehanded.