What does this mean: sources or binaries?
Open source software knows two ways to distribute the software: in the form of binaries and in the form of sources. Mostly it is up to you to decide whether you want to distribute only the binaries or whether you are intentionally going to distribute the sources (too).
Therefore, the OSLiC ’reuses’ a famous rule of thumb: "The source code for a work means the preferred form of the work for making modifications to it." All other forms are denoted by the concept of 'binaries'.
Based on this specification, you can respect some special conditions if you want to distribute the sources and/or the binaries.