The word-form ending in t or in s is called bha when an affix with the force of matup 'whose is it' or 'in whom it is' [[5.2.94]], follows.,
The word Bha is understood in this sutra. Thus is the word उदश्वित्वत् having butter milk Nom. Sing. उदश्वित्वान् पोषः the herdsman having butter milk, विद्युत्वान् बलाहकः the cloud full of thunder. So also यशस्वी famous; पयस्वी full of milk. Thus उदश्वित् + वतुप् = उदश्वित्वत्, यशस् + विनि 5.2.121 = यशस्विन्. By making these Bha, the operation of pada rule is debarred in their case. That is to say the त of udasvit &c., and the स् of yasas &c., are not changed into द and र respectively, which had they been pada words would have been the case by the action of Sutra 8.2.39, and 8.2.66. viz., उदश्विद्वत् and यशोविन् which are incorrect.,