2.4.32 इदमो-अन्वादेशे-अशनुदात्तस्तृतीयादौ

In अन्वादेश and present-tense (using तृतीया etc.), इदं has अश्-आदेश - which is अनुदात्त. अन्वादेश is the article referring to an already mentioned subject.