The word tatra 'there' which is a word ending with Locative -7th-case-affix saptamyāstral [[5.3.10]], is compounded with a word ending in kta and the resulting compound is tat-puruṣa ,
Thus तत्रभुक्तम् 'eaten there.' तत्रकृतं 'done there,' तत्रपीतं 'drunk there.' By making this a compound, the same purpose is served as in sútra 2.1.25 namely, these two words form one word and get one accent.,