As salaamualaykum

Allaah is the most merciful , Allaah draws near to us asking Is there anyone who is calling on Me, so I may answer his prayer? Is there anyone who is asking of Me, so I may grant his request? Is there anyone who is seeking My forgiveness, so that I may forgive him?" (Related by Muslim, Kitab al-Musafirin wa Qasruhu, 6/36)
He gives us so many opportunities to remove our sins, we should grasp these chances whenever they occur, we can never know when our soul will be taken , how many souls were with us last year but are not with us now.
Within these ten days of Dhul Hijjah springs such a chance, in which we can weigh down our good side on the scales.
May Allaah accept our deeds. Ameen.

The Virtues of the Ten Days of Dhul-Hijjah

Muhammad Saalih al-Munajjid
http://www.islamicawakening.com/view...articleID=1013


The superiority and virtues of the first 10 days of the month of Dhul-Hijjah and the deeds legislated in those days

by Shaykh 'Abdullâh Ibn Jibrîn
http://www.islaam.net/main/display.p...563&category=7

First Ten Days of Dhul Hijjah: Days of Virtue And Righteous Deeds

By JIMAS
http://www.islaam.com/Article.aspx?id=534

Fasting on the Day of 'Arafah

By Tajuddin B. Shu'aib
http://www.sunnahonline.com/library/hajj/0004.htm

The Superiority of the First Ten Days of Dhul-Hijjah

By Shaykh ibn al-Uthaymeen
http://www.sunnahonline.com/library/hajj/0010.htm
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And the Most High said:
"Alif-Laam-Meem. Do people think that they will be left alone because they say: ‘We have faith’, and will not be tested? And We indeed tested those who were before them. And Allah will certainly make known, those who are true, and will certainly make known those who are liars." (al-‘Ankaboot 29:1-3)