Karmas get annihilated when prana flows in Sushumna Nadi
All Karmas(actions) get annihilated when prana flows in sushumna nadi, mind remain in complete shoonya(void).
Sushumnavahini prane sunye visati manase/
Tada sarvani karmani nirmulayati yogavit//
When prana is moving through sushumna nadi, mind is in pure shoonya(void). Then all the karmas of the one knowing yoga are annihilated. (Chapter -4, Verse 12).