By rejecting social measures of worth and focusing on inner purity, they are the opposite of the meditator at MN 108:26.4, who hides defilements within.

For atammayatā see MN 47:13.4 and my note there. Here it means that one’s spiritual goal is not limited to this attainment.

This saying also appears at Snp 3.8:15.1 and Snp 3.12:52.1, where it is not connected with absorption practice.