Law doubt-

even in illegal contracts the collatral promises are valid.. for example if A borrows money 4m B to do any illegal business.. but ultimately the debt to b is valid.. i hope tiz clarifies ur doubt...

but the main contract is illegal and its collateral contract is also void na?

for eg, x borrow money from y to do illegal business......it is also void....

if any legal contract is collateral to a illegal contract, it becoms viod........

but if any illegal contract is collateral to legal contract, the collateral contract becomes void but main contract is valid............understood?

since the main contract is void, the promise collateral to the contract also becomes void...

for eg...A and B agree to do smuggling business. collateral to this they decide that they will share the profits and losses equally.

in this case the collateral agreement to share profits becomes void as the profit is derived from illegal sources.

it will be void.