I seen niggas getting hit
Then days went by, then days went by, then days went by

from 50 Cent – Then Days Went By Lyrics on Rap Genius

Meaning

Once, he only seen people getting shot from gang fights, but now he is the one shoot and also getting shot:

“ He [50] was shot nine times: in the hand (a round hit his right thumb and came out of his little finger), arm, hip, both legs, chest, and left cheek.The face wound resulted in a swollen tongue, the loss of a wisdom tooth, and a small slur in his voice.” [Wikipedia]

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I seen niggas getting hit Then days went by, then days went by, then days went by

I seen niggas getting hit
Then days went by, then days went by, then days went by