Valmiki Ramayana Sundara Kanda Sarga 62 Shloka 23
Original Shlokaते स्वामिवचनं वीरा हृदयेष्ववसज्य तत्। त्वरया ह्यभ्यधावन्त सालतालशिलायुधाः।।5.62.23।।
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वीराः heroic, ते they, तत् that, स्वामिवचनम् leader's words, हृदयेषु in their heart, अवसज्य rushed, सालतालशिलायुधाः Sala, Tala trees as weapons, त्वरया at once, अभ्यधावन्त ran.
The heroic vanaras held Sala and Tala trees and rushed at once keeping their leader's words in mind.