In the Isho Upanishad, the first mantra is very famous: Ishahavasya Madamsarum. Do not covet anybody's wealth means do not covet anything that belongs to anybody else or even your own. The second line is also interesting; you see, you can't even say it. Protect your knowledge, your spirituality by renunciation. What will you renounce? Maagrithak Kastya Swedvanam.