Can one commit a sin while gargling or after it, and can this sin be a cause for entering Hellfire?

If someone commits a sin while in the throes of death (ghargara), if they are unconscious, they will not be held accountable. Otherwise, they will be held accountable. Satan is keen to mislead a person at the time of death because deeds are judged by their conclusions. For this reason, the Prophet, peace and blessings be upon him, used to seek refuge in Allah from Satan misleading him at the time of death. Stories have been narrated about the death throes of some of the Salaf, illustrating the intensity of Satan's whispers at that moment.