Fast three days out every month .

This hadith explains the importance of fasting three days out of every month. It is said that this type of fasting is equivalent to fasting for a lifetime. Additionally, it mentions that the most important days to fast are on the thirteenth, fourteenth and fifteenth day of each month. This hadith encourages Muslims to take advantage of these special days in order to gain rewards from Allah SWT. It also teaches us about self-discipline and perseverance as we strive towards our spiritual goals.