Lil Baby is rich.

James Harden is richer.

The Houston Rockets scoring machine made that clear when he gave Baby a 300K designer goodie bag for the rapper's 26 birthday.

Harden gifted Baby a Prada bag full of 100K in cash (a honey bun) and a 200K Richard Mille watch -- which is the second Mille watch he got on his born day.

"Prada bag 'cause he Prouda' me," Baby said of Harden's gift.

Harden and Baby are pals who've been known to vacation together.

Harden is set to make $40.8 million this upcoming season.