Valmiki Ramayana Ayodhya Kanda Sarga 20 Shloka 34
Original Shlokaउपावृत्त्योत्थितां दीनां बडबामिव वाहिताम्। पांसुकुण्ठितसर्वाङ्गीं विममर्श च पाणिना।।2.20.34।।
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उपावृत्त्य rolled on the ground, उत्थिताम् arisen, वाहिताम् for drawing (heavy burden), बडबामिव like a mare, दीनाम् miserable, पांसुकुण्ठितसर्वाङ्गीम् all her body covered with dust, पाणिना with the hand, विममर्श caressed (wiped away).
Rama gently wiped away the dust that had covered her body as Kausalya stood miserable, like a mare who stands up after having rolled on the ground while pulling the load.