The affix yat comes in the sense of 'prepared food' after the words śūla and ukhā ending in the Locative -7th case.,
This debars अण् 4.1.83. As शूले संस्कृतं = शू꣡ल्यं 'roasted on a spit' -- i.e. meat. So also उ꣡ख्यम् 'flesh boiled in a pot'.,
शूल-उखाद् यत्
Adhyāya 4 · Pāda 2 · Rule 17