A full bench of Supreme Court held as follows regarding validity of 498A IPC proceedings when the marriage is null and void,
From Para 2,
2. This matter had not been taken up for hearing for this length of time as the judgment of this Court holding Section 306 of the IPC to be unconstitutional, was under re-consideration by the constitution bench. The constitution bench finally disposed of the matter in criminal case No. 274 of 1984 and batch and set aside the earlier judgment of this Court and held that Section 306 is constitutionally valid. In view of the aforesaid constitution bench decision, two questions arise for consideration in this appeal. One, whether the prosecution under Section 498A can at all be attracted since the marriage with Mohini itself was null and void, the same having been performed during the lifetime of Kalindi. Second, whether the conviction under Section 306 could at all be sustained in the absence of any positive material to hold that Mohini committed suicide because of any positive act on the part of either Shiv Charan or Kalindi.
Finally,
There may be considerable force in the argument of Mr. Khanduja, learned counsel for the appellant so far as conviction under Section 498A is concerned, inasmuch as the alleged marriage with Mohini during the subsistence of valid marriage with Kalindi is null and void. We, therefore, set aside the conviction and sentence under Section 498A of the IPC.
Citations : [2002 ACR SC 1 946], [2007 DMC SC 1 120], [2002 JT SC 2 641], [2007 SCC 15 369], [2010 SCC CRI 3 729], [2002 CRIMES SC 2 177], [2002 SUPREME 3 168], [2006 SLT 9 493], [2007 CCR 1 115]
Other Sources:
https://indiankanoon.org/doc/145448/
https://www.casemine.com/judgement/in/5609adbae4b01497114121aa
Delhi High Court followed this here as precedent and is binding and but not the Reema Aggarwal v. Anupam And Others.
Index of Quash judgements is here and HMA Judgments is here.