Valmiki Ramayana Yuddha Kanda Sarga 110 Shloka 29
Original Shlokaतदप्यशनिसङ्काशैश्छिन्नंरामस्यसायकैः । एवमेवशतंछिन्नंशिरसांतुल्यवर्चसाम् ।।6.110.29।।
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तदपि in that way, अशनिसङ्काशैः like thunderbolt of Indra, रामसायकैःRama's arrows, छिन्नम् cut off, एवमेव in that place, तुल्यवर्चसाम् equally charming, शिरसाम् head, शतम् hundred, छिन्नम् struck off
Rama cut off the afore said head with Indra's thunderbolt like arrows. In that way equally charming a hundred heads were struck off.