Sophiee, any suggestions on how I can access Rambam Yad HaChazake Trumos 11 & 12? And how is one to know if the practice was common place or something pushed before actually being written into law? How do we know it wasn't something common place and expected to do but never offically put into a law?

To You , O LORD, I lift up my soul; in You I trust. Psalm 25:1