Atri Smriti 1.4 - 12
Sage Atri, after rinsing his mouth with waters from all the sacred sites, bowed to all gods and recited all the suktas, and in accordance with all the shastras, he created this Dharmashastra, which destroys all the sins and doubts, and is beneficial to the four Varnas.
Even those who commit sins deliberately and criticize Dharma will be exempted from all of their sins, just by listening to this Dharmashastra. Therefore, one must thoroughly research this Dharmashastra with those who are adept in Vedas and should also preach to their disciples who possess excellent character.
Never reveal the contents of this Dharmashastra to Shudras, wicked Brahmins, stupid people, those who have taken birth in lower castes and those with bad behaviour. Best of Brahmins should never impart this knowledge to these 5 kinds of people.
If a teacher has taught a student even one letter, then there's no object on this earth that a student may give to him and be free of the debt he owes to the teacher. The student who doesn't respect the teacher who taught him one letter (didn't see this coming lol), gets reborn as dog for the next 100 births! And after suffering the life of dogs for 100 births, he takes birth in Chandal caste!
Those who study vedas but don't study other scriptures are born as animals in the next 21 births!
Men who perform their duties and never step a foot on the evil path are respected, even if they live at a distance.
