The units digit of $13$ is $3$ and the units digit of $41$ is $1$.
When we multiply the two numbers together, the units digit of the product is the units digit of $3 \cdot 1$,
which is $\boxed{3}$.
The answer is: 3
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
Find the units digit of $13 \cdot 41$.

### Answer:
