He published two actual code of laws, these supported his practical work. I'm gonna present you with two long lists, with a couple of comments.
First Book of Law:
1. about the sanctity Church possessions (so no lay could rob/tax the Church lands)
2. about the power of bishops over Church possessions, settling relations with laymen
3. about witnesses and prosecutors of the Church (this is a short one, they have to be married, with family, and true followers of Christ)
4. similarly (this one takes the justice over priests from the hands of layman, what is Church business shall remain as Church business)
5. about the work of priests (laymen should help the work of theirs at all cost)
6. about the sanctity of private possessions and last will
7. about the sanctity of royal possessions
8. keeping the Sunday (mandatory rest)
9. similarly (ordering everyone to go to church on Sundays, except those who are guarding the fire - interesting implications this one has, I think I wrote about this already however)
10. keeping the fasts (like lent and such, the larger fasting periods)
11. keeping the Friday (the fast on Friday)
12. about those who die without confession (no Church funeral for him; except those who died suddenly so had not had the opportunity to get a priest)
13. keeping Christianity (priests should sanction those who lack in religious fervor, if anything fails these faithless have to face the royal court)
14a. about murder (110 gold fine, plus penitence by Church law)
14b similarly (killing someone by accident - 12 gold, plus penitence by Church law)
14c. about murdering slaves (slaves murdering slaves - the murdered have to be given in place of the murdered, plus penitence by Church law)
14d. similarly (freeman murders slave - give another slave in place or reimbursement, plus penitence by Church law)
15. about murdering the wife (reimbursement of the wife's family - with cattle - the amount depends on the social status of the murderer, plus penitence by Church law)
16. about the unsheathing the sword (a case of murder, die by the same sword; I kinda remember this one is more about forbidding blood-feud, or vigilantism, even tho the word of the law does not refer to these)
17. about perfidy (maybe treason; chopping a hand off, plus paying with cattle - various amount - plus penitence by Church law)
18. about freeing own slaves (everyone should have to right to free his own)
19. about visiting the church, and those who talk during mass/sermon (no talking during mass)
20. forbidding slaves as serving witness against or accuse freemen
21. freeing slaves of others (reimbursement for the king and the owner)
22a. enslaving the free (pay fine)
22b. similarly (those free who were enslaved but sought and found justice, no need to pay reimbursement for those who enslaved them)