Pāṇini sūtras

The affix ṭhañ comes, in the sense of ‘this its deity’, after the words ‘Mahârâja’ and ‘Proshthapada’

1. mahārāja+proṣṭhapadātमहाराज+प्रोष्ठपदात्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   mम्	mahārājaमहाराज	mahārājaमहाराज	mahārāja [word]महाराज [wओर्द्]	mahārājमहाराज् + plus aअ
   pप्	proṣṭhapप्रोष्ठप्	proṣṭhapadātप्रोष्ठपदात्	proṣṭhapada [word]प्रोष्ठपद [wओर्द्]	proṣṭhapadप्रोष्ठपद् + plus ātआत्

2. ṭhañठञ्

   Part	Lexeme	Sandhi form	Meaning	Stem
   ṭट्	ṭhañठञ्	ṭhañठञ्	ṭhañठञ्	ṭhañठञ्

Anuvṛtti

1. devatāदेवता 4·2·24

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   dद्	devatāदेवता	devatāदेवता	Hindu deity	devatदेवत् + plus āआ