Valmiki Ramayana Kishkindha Kanda Sarga 20 Shloka 10
Original Shlokaहृदयं सुस्थिरं मह्यं दृष्ट्वा विनिहतं पतिम्। यन्न शोकाभिसन्तप्तं स्फुटतेऽद्य सहस्रधा4.20.10।।
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मह्यम् for me, हृदयम् heart, सुस्थिरम् is strong, यत् since, भुवि on the ground, (नि)पतितम् fallen, दृष्ट्वा even seeing, शोकाभिसन्तप्तम् tormented with sorrow, अद्य today, सहस्रधा thousandfold, न स्फुटते not broken into pieces.
'I presume my heart is strong, for it has not broken into a thousand pieces, even though I am overwhelmed with grief to see my husband fallen on the ground.