The ruling on vowing consecutive and unspecified days

Question : He says what is obligatory upon him, and the money is obligatory upon him, then he returns or thinks about it.

Answer : As the author asked, are they specific days? Of a specific type. Specific, so it is obligatory for him to perform i'tikaf (spiritual retreat in the mosque) consecutively and to expiate for leaving the time, and this is as it is in i'tikaf, it is in fasting. If he vows unspecified days and breaks his fast for one of them for an excuse or without an excuse, then he completes it, such as saying, "I have a vow upon me to fast ten days only," then he breaks his fast for one of the days, we say, complete it and there is no blame on you, because these are unspecified days and it happened from him. The second is that he vows ten consecutive days, fasting ten consecutive days, then he breaks his fast without an excuse, so here we say to him, resume and there is no expiation upon you. Because he did not specify them by a time. Or he specifies them by a time, so this requires him to resume and continue, and upon him is an oath expiation for the loss of the time.