15. Muhammad ibn ’Isma‘il has narrated from al-Fadl ibn Shadhan from Safwan Yahya from ’Abd al-Rahman ibn al-Hajjaj from Aban ibn Taghlib from abu ‘Abdallah who said: “The Sunnah can not be analogized (with qiyas). Don't you see that a woman has to make up for her fast (missed due to menses) but she does not have to make up for the prayers (missed due to the same)? O Aban, if the Sunnah was analogized, the religion would have been destroyed.”