Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 11 months ago

Misbehaving with parents is one of the most dangerous major sins. Major sins leads to hellfire unless you leave it and decide not to do it again and compensate it. 

There is no specific Kaffara for such major sin, but to make yur parents happy with you by doing good to them till they pardon you and be happy with you from their heart not just by tongue.

Such major sin is very dangerous in this life as wel as hereafter, so, you need to do everything possible to make your parents happy enough to forgive you and pray fro your forgiveness.

No way to avoid the wrath and curse but to gain the happiness of your parents with you.

Wassalam.