Valmiki Ramayana Bala Kanda Sarga 26 Shloka 18

तत: then, छिन्नभुजाम् with her hands chopped, श्रान्ताम् tired, अभ्याशे in the nearby place, परिगर्जतीम् roaring, सौमित्रि: Lakshmana, क्रोधात् with indignation, हृतकर्णाग्रनासिकाम् अकरोत् cut off her ears and nose.

When she was tired and roaring in a nearby place with her hands chopped off, Lakshmana cut off her ears and the tip of her nose in indignation.