Limits to how much you can contribute to your pension

Hey All, I have a quick question regarding monetary limits on contributing to a PRSA or other pension. I know that there are predefined limits on the amount you can contribute of your gross annual income for tax relief purposes based on age, but is there an upper limit on what you can contribute over this amount?

For example, if I can maximise my tax relief by contributing 10,000, is there anything stopping me from contributing additional after tax income to avail of tax free growth and dividends?

Thanks in advance.

No, there is no upper limit.

Obviously common sense should prevail in the context of the €2m overall limit etc, but one could in theory stick any amount in.

So just to tease this out further at the lower end of things.
Person coming up to retirement.

Has say 300k in private pension takes 75k tax free lump sum.
Has a good lump sum of cash and is thinking of investing is shares and Trusts/funds.

State pension 12k pa. Decides to go with ARF. Drawing down 4% pa. 9k.
Total income now 21k.

Should this person before retirement top up the pension even beyond tax relief

1. Because any growth in the pension is tax free.
2. Up to an amount that total income including pension is below 35300 euro in other words tax only paid at lower rate.
3. Any cash above his limit invest as per normal route ie. shares/trusts etc.