How much salary to set aside?

“Many says, I save 10% and I spend the rest, instead spend the 10% and I save the rest”

According to the popular 50/30/20 rule, you should reserve 50 percent of your budget for essentials like rent and food, 30 percent for discretionary spending, and at least 20 percent for savings. ... But it's not always that simple to suggest the right percentage of income for YOU to save.

More is fine; less is not advised. At least 20% of your income should go towards savings. Meanwhile, another 50% (maximum) should go towards necessities, while 30% goes towards discretionary items. This is called the 50/30/20 rule of thumb, and it's popular quick-and-easy advice.