Go to the Talos Plaza District of Imperial City and find a house owned by a 
man named Dorian (Dorian's
House) in the southeast section of the district. Break into his house and 
find him. When he tells you to leave,
kill him. Do not press X to loot him and take all. Instead, take each item 
individually, finishing with the gold,
which will not run out once it hits 8 pieces. Just keep selecting the gold 
he is carrying and take it. Do this
repeatedly, and the number of gold pieces remaining will freeze when it gets 
down to 8 gold pieces. It will
not go any lower, but will just keep giving you as much gold as desired. 
Note: After you break in and he
tells you to get out, talk to him. Go to "Persuade" and bribe him a lot. 
After that, kill him. He will now
have more money to loot, which makes it easier to get more faster.

Note: To get infinite gold from Dorian easier, use the following trick. 
First, bribe him until you cannot do
so anymore. Then, hit him with your weakest weapon, preferably your fists. 
Then, quickly hold Block and
press [Space] to yield to him. Because he is your friend, he will stop 
fighting. Then, talk to him again. His
relationship will have dropped because you hit him, allowing you to bribe 
him more. Make sure you do
not hit him too much or he will run away. Once his health gets low, the 
guards will probably charge you.
After spending your time or paying them, go back to his house. His health 
will still be low from your attacks.
Wait exactly 24 hours and his health will be reset. Repeat the entire 
process to get the desired amount of
gold. Once you select the money from his pocket it will not go away, leaving 
you with unlimited money.