‎أحسن الله إليك If I say: سُبْحَانَ اللّٰهِ وَبِحَمْدِهِ ، عَدَدَ خَلْقِهِ ، وَرِضَا نَفْسِهِ ، وَزِنَةَ عَرْشِهِ ، وَمِدَادَ كَلِمَاتِهِ. After every fard prayer, would it be bid ah? I know its not from the Sunnah,but I say at the end of dhikr.It became a habit ever since I tried to memorize it

Ustadh AbdulAziz al-Haqqan

Stick to what the Prophet said as for general dua make them all the time and don't specify them to 1 act of worship always.