Pāṇini sūtras

After the verb śad to decay, when it has one of the affixes with an indicatory ś (śit) the Atmanepada is used.

German An śad (tritt Ātmanepada) nach dem Präsensstamm. (60)

1. śadeḥशदेः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   śश्	śadiशदि	śadeḥशदेः	śadशद्	śadशद् + plus eḥएः

2. śitaḥशितः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   śश्	śitशित्	śitaḥशितः	present	śitशित् + plus aḥअः

Anuvṛtti

1. ātmanepadamआत्मनेपदम् 1·3·12

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   āआ	ātmanepadaआत्मनेपद	ātmanepadamआत्मनेपदम्	medium voice	ātmanepadआत्मनेपद् + plus amअम्