अभ्यासे तु विनिद्राणां मनो धृत्वा समाधिना । रुद्राणी वा परा मुद्रा भद्रां सिद्धिं प्रयच्छति ॥ ३.१२५ ॥

abhyāse tu vinidrāṇāṃ mano dhṛtvā samādhinā । rudrāṇī vā parā mudrā bhadrāṃ siddhiṃ prayacchati ॥ 3.125 ॥

Those whose sleep has decreased by practice, and whose mind has become calm through samâdhi, achieve benefits with the use of the Sâmbhavî and other mudrâs.