30 nissaggiya pacittiya (confession with forfeiture):
30 nissaggiya pacittiya are rules entailing "confession with forfeiture." They are mostly concerned with the possessing of items which are disallowed or obtained in disallowable ways. The monk has to forfeit the item and then confess his offence to another monk. The thirty nissaggiya pacittiya for bhikku are:
1. Keeping an extra robe for more than ten days after receiving a new one.
2. Sleeping in a separate place from any of his three robes.
3. Keeping an out-of-season robe for more than thirty days when one has expectation for a new robe.
4. Getting an unrelated bhikkuni to wash your robes for you.
5. Accepting robes from a bhikkuni as a gift.
6. Accepting robes from the laity, except when one's own robes have been destroyed, or one is asking for the sake of another bhikku.
7. Accepting too many robes from the laity when one's own robes have been destroyed.
8. Accepting a robe from a lay person after telling them that their robe is too cheap for you.
9. Accepting a robe from the laity after asking two or more of them to pool their funds in order to buy a nicer robe.
10. Accepting a robe after coming to the treasurer to get the robe more than six times (since this indicates an excess of desire).
11. Owning a blanket or rug made of silk.
12. Making or accepting a blanket or rug made from pure black wool.
13. Making or accepting a blanket or rug made from more than 50% black wool.
14. Making or accepting a blanket or rug fewer than six years after you last made or accepted one.
15. Making or accepting a sitting rug without incorporating at least one old piece of felt 25 cm. square, for the sake of discoloring it.
16. Carrying raw wool for more than 48 km.
17. Getting a bhikkuni to wash, dye, or card raw wool.
18. Accepting gold or money, or telling someone how to donate it. If money is placed in a bhikku's presence he may not recognize it as his nor tell someone else to take care of it for him. Bhikkus often have stewards who will take care of donations, but the stewards are always free to take the money and leave.
19. Buying or selling goods.
20. Trading goods with anyone besides other bhikkus.
21. Keeping an extra alms bowl for more than ten days after receiving a new one.
22. Asking for a new bowl when your old bowl is not beyond repair.
23. Taking a medicine from storage for more than seven days.
24. Using a rains-bathing cloth before the last two weeks of the fourth month of the hot season, or accepting one before the fourth month.
25. Taking back a loaned robe out of anger.
26. Getting thread, and getting people to weave thread for you.
27. Receiving cloth after telling its weavers to increase the quality for you.
28. Keeping robes past the end of the season after accepting them during the last eleven days of the Rains Retreat, (Vassa).
29. Being separated from your robes for more than six nights if you are living in a dangerously distant village and need to separate yourself from your robes after the Rains Retreat.
30. Persuading a donor to give gifts to oneself, when they were previously intended for the sangha at large.
(from the Vinaya Pitaka)