Let us have a look at a phrase inside siilas: "...vera ma.nii-sikkha pada.m samaa dhiyaami..."

("...undertake to study precious conduct of avoiding...");

(vera : abstain/avoid/refrain from/งดเว้น/ละเว้น/หลีกเลี่ยง/เลิก/...)

(sikkha: study; ma.nii : jewel); ...