Here it is ... the first picture of the joint that prosecutors believe links Aaron Hernandez to the murder of Odin Lloyd.
Officials say the joint was found at the murder scene in Massachusetts ... and has Aaron's DNA on it. Prosecutors also believe the joint contain's Lloyd's DNA.
Officials believe both men puffed from the same marijuana cigarette ... which they say further proves that Hernandez was at the scene when Lloyd was killed.
As we previously reported, prosecutors also have video of Hernandez at a gas station roughly 90 minutes before the murder ... in the same car that was spotted at the murder scene.