Ashtangasamgraha 42.6

42.6

bandho deśānusāreṇa nātigāḍhaślatho hitaḥ |

daṃśapūtitvaśophādīn kurute hyatipīḍitaḥ |

aśaktaḥ śithilo rodhduṃ viṣaṃ deśāntaraṃ vrajat ||

A binding according to the site, neither excessively tight nor loose, is beneficial;
for when bound too tightly, it causes putrefaction of the bite, swelling, and the like,
while when loose, it is incapable of checking the poison from traveling to another location.