Hon’ble Apex court held some key aspects in this landmark judgment such as,

1. What is the stage at which power under Section 319 Cr.P.C. can be exercised?
2. Whether the word “evidence” used in Section 319(1) Cr.P.C. could only mean evidence tested by cross examination or the court can exercise the power under the said provision even on the basis of the statement made in the examination-in-chief of the witness concerned?
3. Whether the word “evidence” used in Section 319(1) Cr.P.C. has been used in a comprehensive sense and includes the evidence collected during investigation or the word “evidence” is limited to the evidence recorded during trial?
4. What is the nature of the satisfaction required to invoke the power under Section 319 Cr.P.C. to arraign an accused? Whether the power under Section 319(1) Cr.P.C. can be exercised only if the court is satisfied that the accused summoned will in all likelihood convicted?
5. Does the power under Section 319 Cr.P.C. extend to persons not named in the FIR or named in the FIR but not charged or who have been discharged?

Citations : [2014 SCC CRI 2 86], [2014 RCR CRIMINAL SC 1 623], [2014 SUPREME 1 132], [2014 SLT 1 465], [2014 AIOL 21], [2014 SCC 3 92], [2014 CRIMES SC 1 133], [2014 AIR SC 1400], [2014 BOMCR CRI SC 1 772], [2014 ALLMR CRI SC 801], [2014 AIR SC 667], [2014 CRLJ SC 1118], [2014 JLJR SC 2 385], [2014 SCALE 1 241], [2014 SCC ONLINE SC 26], [2014 KLJ 1 410], [2014 AIC 135 86], [2014 ALD CRL SC 2 152], [2014 PLJR 2 482], [2014 KHC 1 170], [2014 ALLCC 85 313], [2014 CCR SC 1 244], [2014 ADJ 1 727], [2014 LW CRL 1 440], [2014 UC 1 304], [2014 CGLRW SC 1 491], [2014 RLW SC 1 727], [2014 SCJ 2 366], [2015 NCC 1 613], [2014 AD SC 1 609], [2014 JT SC 1 412], [2014 CAL LJ 2 75], [2014 KLT SC 1 336], [2014 AIR SCW 667]

Other Sources :

https://indiankanoon.org/doc/78958066/

https://www.casemine.com/judgement/in/5609af56e4b014971141618b

The latest case law from SC on this subject is here.