They are not to be restrained. They striking one another and giving up their lives will increase the population of the abode of Yama.
पार्थिवाः पृथिवीहेतोः समभित्यज्य जीवितम्। न वा शाम्यन्ति निघ्नन्तो वर्धयन्ति यमक्षयम्॥