What is the ruling on fasting days in Sha'ban, after being accustomed to fasting the White Days of every month, and is increasing fasting in Sha'ban an innovation?

It is forbidden to speak about Allah without knowledge. And the saying of whoever claims that fasting three days of Sha'ban is an innovation is without knowledge. It is recommended to fast three days every month, and the best days are the 'White Days' (the 13th, 14th, and 15th). It is permissible to fast these days consecutively or separately, and in any part of the month. There is no harm in fasting the White Days in Sha'ban, even if some of them fall in the second half of it, especially for those accustomed to fasting. The Prophet, peace and blessings be upon him, used to fast frequently in Sha'ban.