Division bench of Supreme Court held that for a conviction to sustain, the following must satisfy.
From Para 8,
(8) The essential ingredients of the offence under Section 306 I.P.C. are: (i) the abetment; (ii) the intention of the accused to aid or instigate or abet the deceased to commit suicide. The act of the accused, however, insulting the deceased by using abusive language will not, by itself, constitute the abetment of suicide. There should be evidence capable of suggesting that the accused intended by such act to instigate the deceased to commit suicide. Unless the ingredients of instigation/abetment to commit suicide are satisfied, accused cannot be convicted under Section 306 I.P.C.
From Para 9,
M. Arjunan Vs State of Tamil Nadu on 4 Dec 2018(9) In our considered view, in the case at hand, M.O.1-letter and the oral evidence of PW-1 to PW-5, would not be sufficient to establish that the suicide by the deceased was directly linked to the instigation or abetment by the appellant-deceased. Having advanced the money to the deceased, the appellant-accused might have uttered some abusive words; but that by itself is not sufficient to constitute the offence under Section 306 I.P.C. From the evidence brought on record and in the facts and circumstances of the case, in our view the ingredients of Section 306 I.P.C. are not established and the conviction of the appellant-accused under Section 306 I.P.C. cannot be sustained.
Citations : [2019 SCC 3 315], [2018 SCC ONLINE SC 2808], [2019 AIR SC 43], [2018 CRIMES 4 570], [2019 CUT LT 127 442]
Other Sources :
https://indiankanoon.org/doc/65076410/
https://www.casemine.com/judgement/in/5c30a3f89eff432f24b9bc83