EID UL AZHA
The preparation for the Eid day and salaat should begin the day befor Eid. Fasting on the day before Eid (9th Zulhijja) will fetch the reward of Allah removing our sins from the past year and the upcoming year. When maghrib arrives on that night, this represents the night of Eid. The night of Eid is an auspicious night. It says in hadith: “He who keeps alive the nights of both Eids (Eidul-Fitr and Eidul-Azha), convinced of its reward, then his heart will not die when hearts (of other people) will die.”
In another hadith it is stated: “If anyone keeps alive five nights (through zikr and other worship) then he is assured of entry into paradise. (the five nights are) eighth, ninth, and tenth of zul Hijja, the night of Eidul Fitr, and the fifteenth of Shabaan.”