It is commonly attributed to the Bhagivad Gita, but searching through it there were 35 references to death and none of them really matched the quote. Is there some Hindu text that this quote is from?
/u/restricteddata talked about that passage's origins in his answer here, with attention paid to the particular translation.
You didn't find it because the verse doesn't actually say "death", it says "time". The quote is from Chapter 11, Verse 32 of the Bhagavada Gita.
Unfortunately, my browser seems to have a problem pasting certain characters even though they render just fine in my PDF copy of the Gita. Here's a screenshot of the verse you mention.
The phrase used is "kaalo asmi loke kshayakrit pravraddho, lokaan samaahartum iha pvarrttah", which translates to "I am time, destroyer of all worlds, here to annihilate every being in this world." It goes on to say "and I will destroy these soldiers arrayed before you, whether you take part in it or not".
The confusion is from the word "Kaal" which in Sanskrit literally means "time", but in lots of contexts means "death" as well. It's not any error of translation, it's just that to a Sanskrit speaker (or Hindu who is familiar with his holy books), the meaning is the same - it conveys the sense of a container, something that contains and binds/connects the stuff inside. So referring to "kaal" in this sense amounts to saying "the thing that bounds the contents of this package, this world, this universe, whatever" and when you come to the boundary, it ends, that's death.
Edit: I transliterated the Sanskrit into roman text the way it's pronounced. If you understand what all those bars and dots above and below the letters mean, you can read the romanized transliteration directly in my link. I can't, so I just transliterated as close as I could to how a Sanskrit speaker would speak those words.
