Hazrat Muhammad-e-Mustafa (P.B.U.H) (saww)
Barrier between spiritual and physical world
Punishment of grave
قَالَ رَسُولُ اللَّهِ صَلَّی اللهِ عَلَیهِ وَآلِه وَسَلَّمَ: ضَغْطَةُ الْقَبْرِ لِلْمُؤْمِنِ كَفَّارَةٌ لِمَا كَانَ مِنْهُ مِنْ تَضْيِيعِ النِّعَمِ.
Prophet Muhammad (peace be upon him) said: For a true muslim, punishment inside of grave is the penalty of sins for wasting the blessings.
SAWABUL AMAL WA AQIBUL AMAL;P:197