Buying Property From NRI Couple

Definetly and abundantly LEGAL in your case as SPOA is for the very purpose of presenting Title deed before the jurisdictional sub registrar of the immovable property which is signed in prior by the joint title holder in addition SPOA which would have sufficed .You are very safe in this respect .

Both has to be present to sign on the sale deed

If SPOA is legally correct then you may proceed further. It's advisable to get SPOA reviewed by legal expert.

No, Both has to be present at the time sale deed because in future there are some chances of complications.

Dear Client, Yes, it is legally correct for the husband to sign on behalf of his wife if he has a valid Special Power of Attorney (SPOA) that authorizes him to do so. The SPOA should be specific for the purpose of selling the property and must be registered with the Sub-registrar. In this case, since the wife has already signed the sale deed and the husband will appear before the Sub-registrar with the SPOA, it should fulfill the legal requirements. Ensure that the SPOA explicitly mentions the authority to sign the sale deed and that all necessary formalities, such as notarization and registration, are completed correctly. Consulting a legal expert to review the documents before proceeding is also advisable.