Fasting the Three Days and the Seven Days in Hajj

Question:
The questioner says: Honorable Shaykh, regarding fasting three days in Hajj and seven days when the pilgrim returns, is it obligatory or recommended?

Answer:
If he is performing tamattu' or qiran between Hajj and 'Umrah and is unable to slaughter the fidyah, it is obligatory for him to fast ten days, as Allah mentioned. It is obligatory for him to fast . Once he has finished Hajj and returned to his family, whether on the way or in his country, this is obligatory by the command of Allah, Glorified and Exalted is He, in place of the fidyah for tamattu' and qiran. The three days in Hajj begin from the time he enters ihram for 'Umrah until the Day of 'Arafah; all of this is the time for fasting the three days. If he misses fasting them before the Day of 'Id al-Adha, he fasts them after the festival during the days of Tashriq.