After the Desideratives of śru 'to hear', when preceded by prata and āṅ , the ātmanepada affix is Not used.,
The verb sru when taking the prefixes prati and an, is not atmanepadi, though taking the desiderative \san.\ This is also an exception to the rule of sutra 1.3.57. Thus प्रतिशुश्रूषति and आशुश्रूषति ॥
The word prati and an must be upasargas; if they are used as karma pravachaniyas (see (1. 4.—83)) then the rule will not apply, as देवदत्तं प्रतिशुश्रूषते ॥,