Lil Durk isn't the only one Tekashi 6ix9ine treats with a cold heart.

6ix9ine's father, who he's estranged from -- but who did show up at his trial -- has been living in a homeless shelter but Tekashi won't give him any cash.

"Because I don’t have an apartment, he doesn’t know that I’m in the shelter,” Daniel Hernandez Sr., 60, told the New York Post. “Now he’s going to know I’ve been here for, what, two years already?”

“You think he’d come hook me up with something,” he continued. “He’s been giving money to other people. … He gives money to everybody. ‘Here, here, here.'”

We suspect Hernandez was a pretty awful dad, given 6ix9ine's general behavior.  Should 6ix9ine help or nah?