Valmiki Ramayana Aranya Kanda Sarga 70 Shloka 8

ततः then, सुसंविग्नौ became agitated, देशकालज्ञौ knowers of time and space, तौ those two, राघवौ Raghavas, खड्गाभ्याम् with their swords, तस्य his, बाहू two arms, अंसदेशतः from the shoulders, अच्छिन्दताम् cut off.

Then the agitated brothers, aware of time and space, quickly pulled out their swords and cut off both his arms from the shoulders.