Pāṇini sūtras

After a word in the third case in construction, an affix is added, in the sense of ‘completed by him’, when the whole word so formed is the name of a country.

1. tenaतेन

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   tत्	tadतद्	tenaतेन	instrumental	tadतद् + plus aअ

2. nirvṛttamनिर्वृत्तम्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   nन्	nirvṛtनिर्वृत्	nirvṛttamनिर्वृत्तम्	produce	nirvṛttनिर्वृत्त् + plus amअम्

Anuvṛtti

1. tad+nāmniतद्+नाम्नि 4·2·67

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   tत्	tadतद्	tadतद्	this	tadतद्
   nन्	nāmanनामन्	nāmniनाम्नि	name	nāmनाम् + plus niनि