1741. Narrated Ibn ‘Abbaas (radhi Allaahu anhu) : Allaah’s Messenger (Sallallaahu Alaihi Wasallam) used to invoke at the time of distress, saying
“Laa ilaaha illal laahu al-‘Azeem, al-Haleem, Laa ilaaha illallahu Rabbul-‘arshil-Azeem, Laa ilaaha illallaahu Rabbus-samaawati wa Rabbul-ardi, wa Rabbul-‘arshil-Kareem“(*)
(*) [H.174] None has the right to be worshipped but Allaah, the Majestic, the Most Forebearing. None has the right to be worshipped but Allaah, the Lord of the Tremendous Throne. None has the right to be worshipped but Allaah, the Lord of the earth and the Lord of the Honourable Throne.
[Saheeh Al-Bukhaari, Hadeeth No. 357, Vol. 8]
Source : The Book of Dhikr, Ad-Du’aa At-Tauba etc – Chapter 21 – Invocation at the time of distress. Al-Lulu Wal-Marjan, Compiled by : Fuwad Abdul-Baqi, Translated by : Dr. Muhammad Muhsin Khan
1727. Narrated Aboo Huraira (radhi Allaahu anhu) : The Prophet (Sallallaahu Alaihi Wasallam) said,
There are two expressions which are very easy for the tongue to say, but they are very heavy in the balance (of deeds) and are very dear to the Beneficent (Allaah), and they are, ‘Subhaan Allaahi Al-Azeem and Subhaan Allaahi wa bihamdihi.(*)’ “
(*) [H. 1727] see the footnote of Hadeeth No. 1725.
[Saheeh Al-Bukhaari, Hadeeth No. 415, Vol. 8]
Source : The Book of Dhikr, Ad-Du’aa At-Tauba etc – Chapter 10 -The superiority of Tahleel (Saying: Laa ilaaha ill-Allaah) tasbeeh (Saying : Subhan Allaah) and to invoke Allaah (Subhahanu wata’alaa). Al-Lulu Wal-Marjan,Compiled by : Fuwad Abdul-Baqi,Translated by : Dr. Muhammad Muhsin Khan
Rabee’ Ibn Anas (Rahimahullah) said,
A sign (of a person) having love for Allaah is his increase in his rememberance of Him (Allaah), for verily you do not love something except that you increase rememberance of that (thing)
Jaami’ al-Uloom Wal-Hikm of Ibn Rajab (Rahimahullah) p. 444
Shaikhul Islaam Ibnu Taymiyyah (rahimahullaah) said:
Remembrance of Allaah for the heart is like water for the fish, and what will be the state of affairs of the fish when it is separated from water
[Al-waabilus sayyib of Ibnul Qayyim]
* Miracle of the Crying of the Tree Trunk Regarding the Remembrance of Allah
* Ibn al Jawzi’s brilliant depiction of conflict between Mankind and Shaytan
Adh-Dhahabee (rahimahullaah) said:
“If you see the innovative mutakallim saying: ‘leave out the Qur’aan and Sunnah and bring forth logic‘, then know that he is Aboo Jahl.
And if you see the ‘One on the Spiritual Path’, [who claims that by practicing a set of prescribed forms of innovated worship he will attain oneness with Allaah] (i.e. the Soofees) saying: ‘Leave us from [knowledge] that is transmitted (i.e. the Qur’aan and Sunnah) and bring forth the ‘Taste and Ecstasy of Passion’(1),‘ then know that he is Ibless (Shaytaan) become manifest in human form, or has become incarnate within him; so if you become cowardly then run away from him, otherwise wrestle him down, and sit on his chest with your knee, and read ayaatul-kursee, and strangle him.”
(1) The taste and ecstasy of passion is that which they claim to achieve after the continual performance of innovated forms of dhikr.
Al-Bayhaqee relates from Ibn ‘Umar radiallaahu ‘anhu that AlIaah’s Messenger sallallaahu ‘alayhi wa sallam said:
“For everything there is a polish, and the polish for the hearts is the dhikr (remembrance) of Allaah.
There is nothing more potent in saving a person from the punishment of Allaah than the dhikr of Allaah.” It was said: Not even Jihaad in the path of Allaah. So he replied: “Not even if you were to continue striking with your sword until it breaks.” 
 Saheeh: Related by Ahmad (4/352), from Mu’aadh ibn Jabal radiallaahu ‘anhu. It was authenticated by al-Albaanee in Saheehul-Jaami’ (no.5644)
Read More @ Polishing the Hearts by Imâm ibn al-Qayyim