तृतीया-प्रभृतीन्यतरस्यम्

The term अम् is understood here. The upapadas ending with a third case-affix &c., are given in sutra 3.4.47 and the sutras that follow. As मूलकोपदंशं मुङ्क्ते or मूलकेनोपदंशं भुङ्क्ते 'he eats after having relished the food with radish.' So also पार्श्वोपपीड or पार्श्वयोरुपपीडम् शेते (Ill. 4. 49) 'he lies pressing on his ribs.' For upapadas ending with other cases, see sutra 3.4.52 &c. This being an optional rule, it is not necessary that the upapada should be tulya-vidhana with the अम् ; so that this optional compounding may take place even under rule 3.4.59 where अम् is not the only affix enjoined, but there is क्त्वा as well. This vibhasha may therefore be called both प्राप्त and अप्राप्त vibhasha. It is प्राप्त with regard to those rules where अम् is the only affix employed; and it is अप्राप्त with regard to those where श्रम् is not the only affix.,