According to many scholars of the Qur’an, the days mentioned as significant enough for Allah to swear by them are the first 10 days of Dhul Hijjah.
Whoever is not able to perform Hajj should maximise this blessed time by increasing their acts of worship and good deeds – giving more charity, honouring parents, strengthening ties of kinship, enjoining what is good, and forbidding what is evil.
It is also important to enhance our obligatory acts of worship by being mindful of our prayers and ensuring that we pay our Zakat on time.
For those of us who have not yet completed the pilgrimage of Hajj, this is an ideal time to make Du’a that Allah grants us the opportunity to do so soon. Fasting and remembrance are also particularly recommended.