deriv SD cv (81) ashtadhyayi.com hei.de L 81 ETT STT a 8.4.43 ALPH OLDHOMEPAGE NEWHOMEPAGE

toS Si तोः षि ONPANINI 84043

A padafinal /tu stays before S ष्.

Exception to << STunASTuH.

san SaSThaH सन्षष्ठः, 'being sixth'
agnicit SaNDe अग्निचित्षण्डे

Notice that <<< stozzcunAzcuH has no analogous exception: a padafinal /tu is still affected by <<< stozzcunAzcuH before z श्, as in tAJzapati ताञ्शपति, **tacchakyam तच्छक्यम्.

See also final t sandhi.