Upvote:1
There is a sutta (can't find it now) documenting a case when someone asked Buddha about posthumous prayers helping a sinful person obtain better rebirth and his reply basically was that this was like throwing a heavy rock into a lake and chanting "swim good rock, swim" :))
So here is your Theravada answer :)
Now, Ulambana Sutra is a Mahayana sutra and as such should be taken as a skillful mean to motivate people to spread Dharma and make offerings to improve the future rebirths situation in general - not to circumvent individual karma.
Upvote:3
I like to make the following points (from a Theravada standpoint.):
- Sañcetanika Sutta and Loṇa,phala Sutta deals with how Karma can be eradicated or results can be limited.
- If you have done a large amount of +ve Karma then a litter -ve Karma has limited effect
- Your Karma ceases to exist when you experience the result. This is something you want to avoid if it is a bad Karma but when doing Vipassana your old stock of fabrication come into the surface and gives you a sensation and passes away if you are equanimous to the experience. These experiences tend to be more milder than Karma giving results in the normal course. See: The Discourse Summaries
- Rights and rituals have a place in Buddhism:
- This is to keep the institution going and as means to attract people to Buddhism especially who are not yet ready or mature for deep insight
- Rights and rituals can be a steppingstone to liberation if the rights and rituals foster morality (sīla,vata), as in (Ekā,dasaka) Cetanā’karaṇīya Sutta
- Rites and rituals cannot eradicate Karma at least as per Theravada tradition