Pāṇini sūtras

The augment suṭ is placed before ka when sam, pari and upa are followed by the verb kṛ and the sense is that of ornamenting.

German Dieses s tritt an kṛ, karoti nach sam, pari und upa in der Bedeutung “schmücken”. (137)

1. sam+pari+upebhyaḥसम्+परि+उपेभ्यः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   sस्	samसम्	samसम्	samसम्	samसम्
   pप्	pariपरि	pariपरि	pariपरि	parपर् + plus iइ
   uउ	upaउप	upebhyaḥउपेभ्यः	upaउप	upउप् + plus ebhyãएभ्य̃

2. karotauकरोतौ

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   kक्	karotiकरोति	karotauकरोतौ	kṛकृ	karotकरोत् + plus auऔ

3. bhūṣaṇeभूषणे

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   bब्	bhūṣaMभूषM	bhūṣaṇeभूषणे	decoration	bhūṣaṇभूषण् + plus eए

Anuvṛtti

1. saṃhitāyāmसंहितायाम् 6·1·72

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   sस्	saṃhitāसंहिता	saṃhitāyāmसंहितायाम्	continuous speech	saṃhitसंहित् + plus āyआय्

2. pūrvaḥपूर्वः 6·1·135

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   pप्	pūrvaपूर्व	pūrvaḥपूर्वः	antecedent	pūrvaपूर्व + plus ḥः