Chapter and verse. 10% is not the standard in the NT.
No 10% is not the standard. Giving generously out of what you have is the standard.
1 Cor 16:1-2
Now concerning the collection for the saints: as I directed the churches of Galatia, so you also are to do. On the first day of every week,
each of you is to put something aside and store it up, as he may prosper, so that there will be no collecting when I come.
We want you to know, brothers, about the grace of God that has been given among the churches of Macedonia, for in a severe test of affliction, their abundance of joy and their extreme poverty have overflowed in a wealth of generosity on their part.
For they gave according to their means, as I can testify, and beyond their means, of their own accord.
2 Cor 8:1-3
So the disciples determined,
every one according to his ability, to send relief to the brothers living in Judea
Acts 11:28
If you have the ability to spend $500 on a toy, you have the ability to give to a church.