The meaning of it is that in fasting these days there is not, of merit and seeking blessing through it, what there is in other days, even though fasting it is permissible according to what the report contains of choice. As for fasting the day of Arafah: encouragement regarding it has been reported according to what the report contains, and dislike regarding it has also been reported. As for what has been reported of encouragement, it is what he narrated (in the following hadith):
Commentary #3