Asalam o Alaykum Warahmatullahe Wabarakatuhu, Is there any thing in shariah to fast in the month of Rajab in any specific dates. jazakAllah
Answer
There is no sunnah or Nafl fast for the month of Rajab specifically.
However, it is advisable to fast on Mondays and Thursdays. It is also advisable to fast on the 13, 14 and 15 of every lunar month.
and Allah Ta’ala Knows Best
Mufti Ebrahim Desai