“7. To invoke this exception four requirements must be satisfied, namely, (i) it was a sudden fight; (ii) there was no premeditation; (iii) the act was done in a heat of passion; and (iv) the assailant had not taken any undue advantage or acted in a cruel manner. The cause of the quarrel is not relevant nor is it relevant who offered the provocation or started the assault. The number of wounds caused during the occurrence is not a decisive factor but what is important is that the occurrence must have been sudden and unpremeditated and the offender must have acted in a fit of anger. Of course, the offender must not have taken any undue advantage or acted in a cruel manner. Where, on a sudden quarrel, a person in the heat of the moment picks up a weapon which is handy and causes injuries, one of which proves fatal, he would be entitled to the benefit of this exception provided he has not acted cruelly........”