You will read in last blog.Lord Vishnu’s trick.
Lord Vishnu made a Nastik.He was a Mundi.His head is bald.He was bared feet.He had a
wooden pot and
a sweeping instrument(Jhadu).He covered his face from a cloth and
took a cloth also.
Lord Vishnu gave him a name Arihan and said,”make a Puran of 16000(sixteen thousands) mantras.You write it heathen without religion.It should be religionless.You make your followers and teach them.”He made 4 mundi.
And then Vishnu went back to Baikunth.
That Arihan made Pakhand dharm and many pupils.They scattered everywhere .They taught Pakhand Puran. They went to Tripur(nagar).where Tripurasur lived.They scattered their magic but every effort is failed because they prayed of Lord Shiv.so it was not easy.Then, they met directly to Tripurasur.They taught their 16000shlok’s Puran .Tripurasur learnt it properly. They became Nastik.They invested your time in that Pakhand Puran.Then they became weak.They had lost their punya(good effect s of prayer).God Shiv said,I will try to kill them.