Pāṇini sūtras

The final vowel of ‘pitṛ-ṣvasṛ’ is elided when the affix ‘ḍhak’, in the sense of a descendant, is added.

1. ḍhakiढकि

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   ḍड्	ḍhakढक्	ḍhakiढकि	ḍhakढक्	ḍhakढक् + plus iइ

2. lopaḥलोपः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   lल्	lopaलोप	lopaḥलोपः	suffix elision	lopलोप् + plus aḥअः

Anuvṛtti

1. apatyamअपत्यम् 4·1·92

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	apatyaअपत्य	apatyamअपत्यम्	child	apatyअपत्य् + plus amअम्

2. pitṛṣvasuḥपितृष्वसुः 4·1·132

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   pप्	pitṛṣvasपितृष्वस्	pitṛṣvasuḥपितृष्वसुः	pitṛṣvasṛ [word]पितृष्वसृ [wओर्द्]	pitṛṣvasपितृष्वस् + plus uḥउः