Is the reciter considered sinful if he stops reciting the Quran at a verse that might imply a wrong meaning, such as stopping at the sorcerers' saying, "By the might of Pharaoh, we will surely be the غالبون (victorious)," due to circumstances beyond his control, which makes him feel guilty?

Knowledge of stopping and starting (waqf and ibtida’) is half of the science of Tajweed. Stopping at the correct place aids in understanding the verse, while stopping at an improper place alters its meaning or distorts the recitation. The “ugly stop” (al-waqf al-qabeeh) is stopping where the meaning is not complete or where it changes the meaning. The ugliest of these is stopping in a way that suggests a description unfitting for Allah. The “obligatory stop” (al-waqf al-idtirari) is permissible when one is short of breath, but one must resume from a correct point. There is no obligatory or forbidden stop in the Qur’an unless the reciter intends to change the meaning. If his heart is firm in faith, he is sinful; otherwise, he is a disbeliever. If you are forced to stop at a point that suggests a meaning contrary to the intended, you must restart the recitation from a place where it is permissible to begin. However, if you deliberately corrupt the meaning, then if you are a believer, you are sinful; otherwise, you are a disbeliever.