Shiva Purana
निरुद्ध्वा प्राणवायुं च गुणसंख्यानुसारतः ॥ भूतग्रंथिं ततश्छिद्यादस्त्रेणैवास्त्रमुद्रया ॥ ९ ॥
Then he restrained the breath and air according to the number of modes of nature. Then one should cut the knot of ghosts with the same weapon as the seal of the weapon.
english translation
niruddhvA prANavAyuM ca guNasaMkhyAnusArataH ॥ bhUtagraMthiM tatazchidyAdastreNaivAstramudrayA ॥ 9 ॥
hk transliteration by Sanscript