Valmiki Ramayana Sundara Kanda Sarga 46 Shloka 26

ततः then, सः he, मथिताष्टाश्वम् eight horses killed, भग्नाक्षकूबरम् with its axle and wooden frame (to which the yoke is fixed) broken, रथम् chariot, विहाय left, त्यक्तजीवितः devoid of life, भूमौ on the ground, न्यपतत् fell.

Having lost his chariot, the horses yoked to it killed, its axle and pole broken to pieces, Durdhara fell down dead from the chariot.