Interpretation of Kitab At-Tauhid - Ghayatul-Murid (The Destination of the
Seeker of Truth)
By the Noble Shaikh: Salih bin Abdul-Aziz bin Muhammad bin Ibraheem Aali
Here is a sample chapter from the book without Arabic verses. Due to the OCR
there may be some typographical errors.
Chapter 1: The Virtue of At-Tauhid and what Sins it Expiates*
Allah the Most High said,
"Those who believe and do not mix their belief with any Dhulm, for them there is security and they are guided ones." (6:82)Â 
Ubaadah bin As-Saamit (R) narrated that Allahs Messenger; said,
"Whoever testifies that there is none worthy of being worshipped but Allah, Who has no partner, and that Muhammad is His slave and Messenger, and that Eesa (Jesus) is the Slave of Allah, His Messenger, and His Word which He bestowed in Maryam (Mary) and a spirit (created) from Him, and that Paradise is true, and that the Fire is true, Allah will admit him into Paradise, whatever his deeds may be.Â 
They (Al-Bukhari and Muslim) both recorded this Hadith. They (Al-Bukhari and Muslim) also recorded the Hadith of Itbaan:
"Indeed Allah has forbidden for Hell the person who says: There is nothing worthy of being worshipped but Allah, seeking thereby the Face of Allah."Â 
Abu Saeed AI-Khudri narrated that Allahs Messenger said,
"Musa (Moses) said: O my Lord, teach me something by which I can remember You and supplicate to You. Allah answered: Say, O Musa, La ilaha illallah (none has the right to be worshipped but Allah). Musa said: O my Lord, all your slaves say this. Allah said: O Musa, if the seven heavens and all of their inhabitants besides Me, and the seven earths were in a pan (of a scale), and La ilaha illallah was in (another) pan, La ilaha illallah would outweigh them."
Ibn Hibbaan and AI-Haakim recorded this, and he (AIHaakim) graded it authentic (Saheeh).
At-Tirmithi recorded a Hadith that he graded good (Hasan), from Anas (who said): "I heard Allahs Messenger ; saying,
"Allah the Most High said, "O son of Aadam! If you came to Me with sins filling the earth, then you met Me without associating anything with Me, I would come to you with its (the earths) fill of forgiveness."Â