Valmiki Ramayana Bala Kanda Sarga 6 Shloka 21

अग्निकल्पानाम् of men comparable to a flaming fire, पेशलानाम् of experts, अमर्षिणाम् determined, कृतविद्यानाम् accomplished in the learning of science of arms, योधानाम् warrior, केसरिणाम् resembling lions, गुहा इव like mountain caves, सम्पूर्णा filled with.

It abounded with warriors, like a cave with lions. They were almost like flaming fire, the most determined among experts and accomplished in learning (the science of arms).