Biggie's "Warning" wasn't released as a single, but was a hip hop promotional track as a B Side to the "Big Poppa" single.

Bad Boy produced a video in 2 version, one is clean, and the above is the "Uncensored Dirty Version", although this is the Uncensored video version, this TV version is a bit different from the "Ready To Die" album version:

The song been produced by Easy Mo Bee, which sampled the 1969 classic by Isaac Hayes, "Walk On By", the video was released on the re-release of the song in 1995 as part of the "Dead Presidents" soundtrack: