Sarvadarshanasangraha 3.128

3.128

āsravo bhavahetuḥ syāt saṃvaro mokṣakāraṇam/

5. "That the good man should carefully perform his bodily evacuations in a spot free from all living creatures,[47]—this is the utsarga-samiti.[48] Hence samvara has been etymologically analysed as that which closes (sam + vṛṇoti) the door of the stream of āsrava,[49] as has been said by the learned, 'Āsrava is the cause of mundane existence, saṃvara is the cause of liberation;[50] this is the Ārhat doctrine in a handful; all else is only the amplification of this.'"