Pāṇini sūtras

When the affixes beginning with su (IV.1.2) and ending in kap (V.4.151.) follow, not being Sarvanâmasthâna (I.1.43) then that which precedes is called pada.

1. su+ādiṣuसु+आदिषु

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   sस्	suसु	suसु	suसु	sस् + plus uउ
   āआ	ādiआदि	ādiṣuआदिषु	etc.	ādआद् + plus iṣuइषु

2. a+sarvanāmasthāneअ+सर्वनामस्थाने

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	aअ	aअ	not	aअ
   sस्	sarvanāmasthसर्वनामस्थ्	sarvanāmasthāneसर्वनामस्थाने	sarvanāmasthānaसर्वनामस्थान	sarvanāmasthānसर्वनामस्थान् + plus eए

Anuvṛtti

1. padamपदम् 1·4·14

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   pप्	padaपद	padamपदम्	word	padपद् + plus amअम्