Existence and non-existence, and know that it does not happen to anyone except out of heedlessness of the rights he is obligated to perform, which the Sharia has required him to perform. So whoever brings them to his sight and does his best to perform them, and then there are obstacles that prevent him from performing them that make him an excuse before God, then the matter has fulfilled his right and God has fulfilled his obligation. There is no embarrassment or blame for him, nor is the right to address him with the obligation of a right upon him despite that impediment. The impediments are of two types: a type that occurs with presence and a type that occurs with non-attendance, which is negligence. As for the type that occurs with presence, it is divided into two types. He did his best, which God assigned him, to search for evidence of the obligation of that matter, but he did not find it. He is one of the people of ijtihad, so he is only obligated to do what his evidence requ