Shiva Purana
अथ ब्रह्माच्युतौ वीरौ हंतुकामौ परस्परम् । माहेश्वरेण चाऽस्त्रेण तथा पाशुपतेन च ९ ।
There in the battlefield Brahmā and Acyuta desirous of killing each other were awaiting the result of the Māheś-vara and the Paśupata weapons hurled by them.
english translation
atha brahmAcyutau vIrau haMtukAmau parasparam । mAhezvareNa cA'streNa tathA pAzupatena ca 9 ।
hk transliteration by Sanscript