Saṃvara, “closing”, shuts the channels through which karma enters. It is achieved by the vows, by carefulness in walking, speaking and eating, by guarding mind, speech and body, by the ten virtues, by reflection and by enduring hardship with equanimity. Only when the inflow stops can the old karma be worn away.
Saṃvara
The stopping of karmic inflow through vows, vigilance, self-control and meditation.
Also: Samvara