Ibn Rajab al-Hanbali This is a treatise we have written concerning humility (Khushu') and the hearts meekness and breaking (inkisar) before the Lord. The basic meaning of Khushu', is the softness of the heart, its being gentle, still, submissive, broken, and yearning. When the heart is humble, so too is the hearing, seeing, heard, and face; indeed all the limbs and their actions are humbled, even speech. The source of the Khushu, that takes place in the heart is the gnosis of Allah's greatness, magnificence, and perfection.
Author: Ibn Rajab Al-Hanbali
In this book, Dr. Saleh As-Saleh explains only seven foundations out of sixty mentioned in the book of Sh. Abder-Rahman As-Se'di "The Basic Rulings and Principles, and the Beneficial and Eloquent Classifications and Differentiations". The importance of this book stems from the nature of its content. This is because the scholars of Islam gave great importance to the study of the basic rulings and principles of fiqh so that they are able to encompass the various cases and refer these cases to the basic rulings and principles in order to deduct and apply the judgment in a comprehensive, yet precise manner.
Author: Abdur-Rahman Bin Nasir as-Sadi
Translators: Dr. Saleh As-Saleh
Publisher: http://understand-islam.net - Understand Islam Website
A small but beneficial treatise concerning innovation, celebrating the birth of the Prophet (s), as well as a small note about Wahhabiyyah and the creed Muhammad bin Abdul-Wahhab.
Author: Abdul Aziz bin Abdullah bin Baz
Source: http://www.islamhouse.com/p/1267
A Book discussingthe importance of khushoo in prayer and how to achieve it
Author: Imran Hussein
Source: http://www.islamhouse.com/p/1401
Hajj and Tawheed: Hajj is to set out for Makkah to worship Allah by performing certain religious rights in accordance with the Prophet's (peace and blessings be upon him) Sunnah. It is a time in which to call upon Allah to purify the self from any worship to anyone other than him. This booklet explains the basic rights of Hajj. It also notes that the tawheed of Allah requires the Muslim to follow the perfect way of worship, demonstrated by Muhammad (peace and blessings be upon him) and as understood by the Sahaabah who were the best of mankind.
Author: Dr. Saleh As-Saleh
An overview of the rites of Hajj, Umrah, and Ziyaarah in the light of Quran and Sunnah.
Author: Muhammad ibn Saleh al-Othaimeen
Source: http://www.islamhouse.com/p/1375