No shadow for a specific object for a specific light

Question

There are many objects in the scene, and multiple lights too. Now, if I do not want a specific object's shadow for a specific light, what should be done?

Note that there are a few answers like this explaining the way to disable all the shadows of an object (then the object casts no shadows at all for any light), but what I want to achieve is disabling shadow of that object only for a specific light.

Answer 1

The only way is to create a separate render layer where you have a collection with the object ad a collection with all the lamp except the one (and a collection with the other scene object to make a mask).

Answer 2

Create 2 view layers and two collections.

Then separate the lamps and objects for each collection.

In compositor you can combine them like this: