Do I have to target a holding in order to use its Gold-producing traits? Could you point me to the ruling the answer is based? It's not that I don't trust a simple answer or anything, is just that it'll probably clear any other possible doubts without the need for me taking the RT's time.
Bowing for Gold
A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
Do I have to target a holding in order to use its Gold-producing traits?
No.
Could you point me to the ruling the answer is based? It's not that I don't trust a simple answer or anything, is just that it'll probably clear any other possible doubts without the need for me taking the RT's time.
I'm not sure I can point you to something that does not exist. There's no rule that says that you target something when using its traits, not at all.