Commentary for Rosh Hashanah 56:3

לא לקרות לקרות הא קא קרי בקורא להגיה

The following objection was raised against this view: 'If a man was reading the [passage of the shema'] in the Torah and the time of reading [the shema'] arrived, if he put his mind to it, he has performed his religious duty'. Does this not mean, 'put his mind to perform his religious duty'? - No; it means, [put his mind] to read [distinctly].

Rashi on Rosh Hashanah