AupAsana and vaishvadeva are two nitya-karma-s which involve fire oblations according to various gRhyasUtra-s. How common is it for people to do it in a single sitting, without separate pUrvAnga-s (ie - everything until AjyabhAga in the Apastamba tradition) and uttarAnga-s (ie - everything after prAjApatya and vyAhRti homa in the Apastamba tradition)? What are traditional arguments for and against doing so?
Talking to practitioners and examining this prayoga text, aupaasana and vaishvadeva are usually done with separate pUrvanga-s and uttarAnga-s. It appears that the these are significantly shortened (no idhmAdhAnam, possibly not even AjyabhAga, no jayAdi etc..).
I suppose that the traditional argument in favor of doing so is as follows:
- sviShTakRt oblation is already included in the pradhAna-homa in both cases - so need for detailed uttarAnga is implicitly removed.
- the sUtra only specifies pariShechana before and after for the aupaasana. The same may be assumed of vaishvadeva.