ह्रस्वं लघु

This defines the word Laghu. A hrasva vowel which has already been defined 1.2.27, is under certain circumstances called laghu or 'light'; thus the i of भिद to break, is laghu, and by being laghu it is gunated before the affix ता + आ, as भेत्ता he will break, by virtue of the rule (VII 3. 86), which declares that a laghu penultimate vowel is gunated before a Sarvadhatuka or an ardhadhatuka affix. So also छेत्ता, अचीकरत् and अजीहरत्.,