Pāṇini sūtras

The affix ṭhañ comes after the name of an explainable work called after a Ṛshi, in the senses of ‘occurring therein’ or ‘a commantary thereon’, when it refers to an Adhyaya only.

1. adhyāyeṣuअध्यायेषु

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	adhyāyaअध्याय	adhyāyeṣuअध्यायेषु	chapter	adhyāyअध्याय् + plus eṣuएषु

2. eva+ṛṣeḥएव+ऋषेः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   eए	evaएव	evaएव	merely	evaएव
   ṛऋ	ṛṣiऋषि	ṛṣeḥऋषेः	ṚṣiṚषि	ṛṣऋष् + plus eḥएः

Anuvṛtti

1. bhavaḥभवः 4·3·53

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   bब्	bhavaभव	bhavaḥभवः	being	bhavभव् + plus aḥअः

2. vyākhyātavya+nāmnaḥव्याख्यातव्य+नाम्नः 4·3·66

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   vव्	vyākhyāव्याख्या	vyākhyātavyaव्याख्यातव्य	explain	vyākhyātavyव्याख्यातव्य् + plus aअ
   nन्	nāmanनामन्	nāmnaḥनाम्नः	name	nāmनाम् + plus naḥनः

3. ṭhañठञ् 4·3·67

   Part	Lexeme	Sandhi form	Meaning	Stem
   ṭट्	ṭhañठञ्	ṭhañठञ्	ṭhañठञ्	ṭhañठञ्