Pāṇini sūtras

The fifth case-affix is employed optionally when the noun expresses an attribute, being the causa of an action, and not being of the feminine gender.

1. vibhāṣāविभाषा

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   vव्	vibhāṣविभाष्	vibhāṣāविभाषा	option	vibhāṣविभाष् + plus āआ

2. guṇeगुणे

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   gग्	guṇaगुण	guṇeगुणे	property	guṇगुण् + plus eए

3. a+striyāmअ+स्त्रियाम्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	aअ	aअ	not	aअ
   sस्	strīस्त्री	striyāmस्त्रियाम्	feminine	strस्त्र् + plus iyāmइयाम्

Anuvṛtti

1. a+abhinihiteअ+अभिनिहिते 2·3·1

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	naन	aअ	not	naन
   aअ	abhidhāअभिधा	abhinihiteअभिनिहिते	express	abhihitअभिहित् + plus iteइते

2. hetauहेतौ 2·3·23

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   hह्	hetuहेतु	hetauहेतौ	cause	hetहेत् + plus auऔ

3. pañcamīपञ्चमी 2·3·24

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   pप्	pañcamīपञ्चमी	pañcamīपञ्चमी	ablative	pañcamपञ्चम् + plus īई