What will be deemed as Amal-e-katheer in salaat?

Question: What will be deemed as Amal-e-katheer in salaat?

Answer: Whatever the person deems to be excessive in his disretion, will be ‘amal-e-katheer. Amal-e-katheer means to do something not part of salaat, for example scratching. If you feel guilty that you have over done the action of scratching, your salaat will be faasid.