Day Questions

Someone joins the congregational prayer while the imam is in the bowing position, but he later changes his intention not to follow the imam. He subsequently decides to follow him again during the same prayer. Can he do so?

If he intended to break the congregational prayer and pray alone, and then he or the imam had performed an act of prayer, then he has left the congregational prayer and must complete his prayer alone. Rather, the same is the case if neither of them performed any act, as an obligatory precaution.

If a person commits an act which his marja deems to be prohibited, and on Judgment Day it is discovered that the act was not actually a sin after all, will this person not be punished for it since the act was not prohibited? Or will he get punished because he disobeyed the edict of his marja?

The said person is not considered as disobedient, but is liable for proceeding to commit an act that he was informed to be a sin. An example of this is if a person drinks from a glass thinking it to be wine, but it turns out to be water.

I want some guidance regarding keeping dogs. Can we keep dogs in the house, considering that they serve as guides to the blind, they safeguard homes and are a good friend?

You can keep them in the house, but they are najis. You should purify whatever part of your body or clothes comes in contact with a dog via dampness before offering the prayer.