Natyashastra
कस्मान्मृत इति प्रोक्ते किं कर्तव्यं प्रयोक्तृभिः । अङ्कुशग्रहणान्नागं खलीनग्रहणाद्धयम् ॥ १०७॥
When it is said, "Why is he dead?" what is to be done by the actors? The elephant is represented by holding a goad (aṅkuśa), and the horse by holding a bridle (khalīna).
english translation
kasmAnmRta iti prokte kiM kartavyaM prayoktRbhiH । aGkuzagrahaNAnnAgaM khalInagrahaNAddhayam ॥ 107॥
hk transliteration by Sanscript