Observe As-Saum in Ramadan and also observe As-Saum for six days in the month of Shawwal .

The hadith narrated by Abu Ayyub states that fasting during the month of Ramadan is a great act of worship and devotion to Allah. Additionally, if one fasts for six days in the month of Shawwal after Ramadan, it is as if they have fasted for an entire year. This means that their reward from Allah will be multiplied greatly and they will receive immense blessings from Him. This hadith encourages Muslims to take advantage of this opportunity and reap its rewards by fasting during this time period. It also serves as a reminder that all good deeds are rewarded by Allah and He does not forget any act done out of love or devotion towards Him.