Does a jury have a sua sponte duty to further explain the mens rea element of voluntary manslaughter?

Because the jury was correctly instructed about the law, defendant cannot show the court had a sua sponte duty to further explain the mens rea element of voluntary manslaughter and its malice-negating properties or that his substantial rights were affected by the lack of explanation. Similarly, defendant's counsel was not ineffective for failing to request further explanation of these principles. (People v. Jackson (1989) 49 Cal.3d 1170, 1188 [counsel was not ineffective when the record illuminates a reasonable explanation for counsel's failure to object].)