Can anyone identify which suttas these quotes (having to do with the sense of self) come from?

contains instructions for ridding the sense of a personal self. I was wondering which suttas (or other texts) the quotes at the end come from: > “By rightly understanding ‘I am,’ one makes and end of suffering.” and: > “The eradication of ‘I am’ is the attainment of Nibbana here and now.”