Rasulullah (sallallahu ‘alayhi wasallam) said, ‘There are no days more preferred by Allah, nor days in which actions are more beloved to Allah the Mighty and Majestic than these ten days (i.e. of Dhul Hijjah)—so abundantly say ‘La ilaha illa Allah’ and ‘Allahu Akbar’, and make abundant dhikr. Verily, fasting one of its days is equal to fasting a year, and actions are multiplied 700-fold during them.”
Imam Bayhaqi (rahimahullah) has recorded this Hadith in his Shu’abul Iman, Hadith: 3481.
Although Hafiz ibn Hajar (rahimahullah) has pointed a weak narrator in the chain, ‘Allamah Mundhiri (rahimahullah) has sort to justify the narration.
Nevertheless, the Hadith is still suitable to quote, despite its slight weakness.
(Fathul Bari, Hadith: 969 & Targhib, Hadith: 1729)
The huge rewards for deeds on these days are further emphasised by Sayyiduna Anas (radiyallahu’anhu) who said:
‘It used to be said [by the Sahabah] that every day of the ten days [of Dhul Hijjah] is equal to a thousand days, and the day of ‘Arafah is equal to ten thousand days.’ i.e, in virtue
(Shu’abul Iman, Hadith: 3488. Allamah Mundhiri (rahimahullah) declared the chain as sound (la ba-sa bihi)
(Targhib, Hadith: 1730)
Also see here.
And Allah Ta’ala Knows best,
Answered by: Moulana Muhammad Abasoomar
Checked by: Moulana Haroon Abasoomar