فالوجه في هذا الخبر انه إذا ازدرده بعد ما صار في فمه ناسيا. فأما إذا تعمد ذلك فقد أفطر ولزمه ما يلزم المفطر متعمدا.
Thus, the proper meaning of this report is that it is when he swallowed it after it had reached his mouth forgetfully. But if he deliberately did that, then he has broken the fast, and what is binding upon one who deliberately breaks the fast becomes binding upon him.