Supreme Court held that,

From Paras 15 and 16,

15. In our opinion the view taken by the High Court is correct. It often happens that there are disputes and discords in the matrimonial home and a
wife is often harassed by the husband or her in-laws. This, however, in our opinion would not by itself and without something more attract Section 306 IPC read with Section 107 IPC.
16. However, in our opinion mere harassment of wife by husband due to differences per se does not attract Section 306 read with Section 107 IPC, if
the wife commits suicide. Hence, we agree with the view taken by the High Court. We, however, make it clear that if the suicide was due to demand of
dowry soon before her death then Section 304B IPC may be attracted, whether it is a case of homicide or suicide. Vide Kans Raj vs. State of Punjab & Ors. 2000(5) SCC 207, Satvir Singh & Ors. vs. State of Punjab & Anr. 2001(8) SCC 633, Smt. Shanti & Anr. vs. State of Haryana AIR 1991 SC 1261.

Citations : [2007 AIR SC 2045], [2007 SUPREME 3 1073], [2009 ANJ SC 2 160], [2007 CRLJ SC 3420], [2007 SCC 11 205], [2007 SCALE 7 167], [2007 JT 7 36], [2007 SCR 6 474], [2007 AIOL 570], [2007 AIR SC 3107], [2007 AIR SCW 3107]

Other Sources :

https://indiankanoon.org/doc/366677/

https://www.casemine.com/judgement/in/5767b129e691cb22da6d54ae

https://www.latestlaws.com/index.php/latest-caselaw/2007/may/2007-latest-caselaw-439-sc/