▪️Question:
There are some people who extend the days of Eid. Is this extension correct?
▫️Answer:
Shaikh Uthaymeen رحمه الله تعالى:
• The first day is Eid, and there is no problem with this. The second and third day is Eid also, this is due to the saying of the Messenger when he heard the two small girls singing. He said: Leave these two O’ Abu Bakr, for verily these are the days of Eid.(1)
The words (أيّام) days are plural, and the least plural can be (in Arabic language) is three. So there is no problem that the people make all three days Eid, except in one affair and it is fasting, because fasting the second and third of the month Shawwal is prohibited like Eid; therefore, this is not permissible. As for Dhul-Hijjah, then it is known that the days of Tashreeq can not be fasted. So when adding the three days (of tashreeq) to Eid, it will become four days (not permissible to fast). Perhaps what you want to (ask) is the happiness of the people (on those days), so we say they’re three days in the two Eids – Eid Al-Adha and Eid Al-Fitr.
(1) Al-Bukhari 949, Muslim 892
📚Liqaa’at Al-bab Al-Maftuh 5/527
Taken from: https://t.me/ReligionIslamqa