  We present the results of XMM-Newton observations toward the pulsar PSR
J1826$-$1256, which lies at 5$^{\prime}$.4 from the centroid of the TeV source
HESS J1826$-$130. These data show an elongated nebula with the pulsar located
in the northern border with the emission in the direction of the peak of the
very high energy source. The spectral study of the X-ray emission shows a clear
softening of the photon index with increasing distance from the pulsar. We
discuss the connection among the pulsar, its nebula, and the HESS source.
