Shiva Purana
तस्मिन्दैत्ये विनष्टे तु रुद्रहस्ते गतं तु यत्॥ तच्छूलमिति तीक्ष्णाग्रं संत्रासजननं महत् ॥ २३॥
When that demon was killed this trident had returned to Rudra. It had a sharp point and was highly terrifying.
english translation
tasmindaitye vinaSTe tu rudrahaste gataM tu yat॥ tacchUlamiti tIkSNAgraM saMtrAsajananaM mahat ॥ 23॥
hk transliteration by Sanscript