Meaning
A cheat or swindler (after the penal code section for fraud).
Literally: four hundred and twenty
See it in the verse
Char sau bees in Iqbal’s couplets
Sau sau umiden bandhti hai ik ik nigah par
Mujh ko na aise pyar se dekha kare koi
Mujh ko na aise pyar se dekha kare koi
A hundred hopes are pinned on every single glance — let no one look at me with such love.
Love · Humility · Aspiration
Baatil se dabne wale ai aasman nahin ham
Sau baar kar chuka hai tu imtihan hamara
Sau baar kar chuka hai tu imtihan hamara
We are not the kind to be crushed by falsehood, O sky; a hundred times already you have tested us.
Courage · Adversity