From the NannyMUD documentation

LAST CHANGE

2000-12-15

FUNCTION

NAME
        stop_fight - halt fighting in a living object


LOCATION
	/obj/living.c

SYNTAX
	void stop_fight();

DESCRIPTION
	If a living object is engaged in combat, calling this function
	will stop its fighting.


NOTE
	Unless stop_fight() is immediately called in its opponent as
	well, the first creature will resume its fight as soon as 
	it is hit again.


NOTE
	Use this function for 'scrolls of taming' and the like.
	If you don't want players to be fight a certain monster or
	under certain circumstances, you might want to redefine the
	hit_player function.


SEE ALSO
        hit_player in lfun/living/hit_player