State of complete Eternal bliss.  Chad Di Klaa happens in Sach Khand and not less than that.  It happens when Naam goes into the Hirda and Rom-Rom.  This state of Chad Di Klaa comes through Naam.  The SatGuru’s prayed to God that if it is in God’s will, then Naam Chad Di Klaa be given to everyone in the whole world for their uplifment,  “Nanak naam chad di klaa. Teray bhanay sarbatt da bhalla.”   When you are this state you also help others to reach it too.  That is a Sant’s reason for being in this world.