In another Hadeeth, Hazrat Ibn Abbas (Radhiyallahu-Anhu) reports: "that the Messenger of Allah (Sallallahu-Alayhi-Wasallam) said: "The one that keeps a fast in the month of Muharram will receive the reward of thirty fasts for each fast (in this sacred month)."

Meaning: The word "Muharram" means "Forbidden." Even before Islam, this month was always known as a scared month in which all unlawful acts were forbidden, prominently the shedding of blood.

Fasting in the month of Muharram is highly desired, especially on the tenth day, 'Ashura. The Messenger of Allah (saas) has been reported as saying when asked which prayer is better after obligatory prayer: "Prayer in the middle of the night." He was asked again which fast is better after Ramadan. He said: "In the month that is called Al-Muharram." (Ahmed, Muslim, and Abu Dawud)

The Tenth of Muharram and Ashurah
The Islamic year begins with Muharram ul Haram, the first month of the Hijri Calendar. While followers of other religions spend their opening month in worthless merriment, the first month of Islam teaches us lessons of admonition, good counselling, knowledge of Allah Ta’ala, sacrifice, selflessness, patience and seeking the pleasure of Allah Ta’ala.
The tenth day of Muharram (Ashurah) has many distinctive qualities and features. Allah Ta’ala created the heavens and the earth on this blessed day. On this day He gave His infinite blessings and bounties to many of His Prophets and delivered them from the clutches of their enemies