DHIKR IN THE HOLY QUR'AN - PART III
31) (While talking to the unbeliever on the Day of Judgement, they will be asked whether they remember) Lo! There was a party of My servants who said, "Our Lord! we believe, therefore forgive us and have mercy on us, for You are the best of all who show mercy."
"But you chose them for a laughing-stock, until this (past time) caused you to forget remembrance of Me, while you laughed at them. Lo! I have rewarded them this day for as much as they were steadfast; and they verily are the triumphant." 
[ SŪRAH AL-MU'MINŪN, 23:109-110 ]
32) (While praising men with perfect faith) men whom neither merchandise nor sale beguileth from remembrance of Allah and constancy in prayer and paying to the poor their due.
[ AN-NUUR, 24:37 ]
33) But verily, remembrance of Allah is the most important.
WA LA-DHIK-RUL-LAAHI AKBAR
[ AL-`ANKABUUT, 29:45 ]
34) (Those) who forsake their beds to call upon their Lord in fear and hope, and spend of what We have bestowed on them. No soul knows what joy is kept hidden for them as a reward for what they used to do.
[ AS-SIJDAH, 32:16-17 ]
Note: It is mentioned in a hadith that one who prays to Allah in the last portion of the night gains acceptance of Allah. If possible, you should remember Allah at this hour.
35) Verily in the messenger of Allah you have a good example for him who looks unto Allah and the last Day, and remembers Allah much.
[ AL-AHZAAB, 33:21 ]
36) (While talking of the virtues of the believers) And men who remember Allah much and women who remember; Allah hath prepared for them His forgiveness and a vast reward.
[ AL-AHZAAB, 33:35 ]
37) O you who believe! Remember Allah with much remembrance. And glorify Him morning and evening.
[ AL-AHZAAB, 33:41-42 ]
38) And Noah (Alayhis Salam) verily prayed unto Us, and we are the best Who grant prayers.
[ AS-SAAFAAT, 37:75 ]
39) Then woe unto those whose hearts are hardened against remembrance of Allah. Such are clearly in error.
[ AZ-ZUMAR, 39:22 ]
40) Allah has (now) revealed the most beautiful message of the Qur'an, a Scripture consistent with itself, repeating (its teaching in various aspects). Whereat doth tremble the skins of those who fear their lord, so that their flesh and their hearts soften to Allah's remembrance. Such is Allah's guidance, wherewith be guideth whom He will.
[ AZ-ZUMAR, 39:23 ]
41) Therefore pray unto Allah, making devotion pure for Him (only), however much the disbelievers may be averse.
[ AL-MU'MIN, 40:14 ]
42) He is the Living One, there is no Allah save Him. So pray unto Him, making devotion pure for Him (only).
[ AL-MU'MIN, 40:65 ]
43) And he whose sight is dim to the remembrance of the Beneficent, We assign unto him a devil who becomes his comrade.
[ AZ-ZUKHRUF, 43:36 ]
44) Muhammad (Sallallahu `Alayhi Wa Sallam) is the Messenger of Allah. And those with him are hard against the disbelievers and merciful among themselves. You see them bowing and falling prostrate (in worship), seeking bounty from Allah and His acceptance. Their mark is on their foreheads from the traces of prostration. Such is their likeness in the Torah and their likeness in the Gospel - like as sown corn that sends forth its shoot and strengtheneth it and riseth firm upon its stalk, delighting the farmers - In the same manner, the Companions of the Prophet (Sallallahu `Alayhi Wa Sallam) were weak in the beginning and then grew in strength day by day, that He may enrage the disbelievers with (the sight of) them. Allah has promised, unto such of them as believe and do good works, forgiveness and immense reward.
[ AL-FATH, 48:29 ]
In these verses though the emphasis obviously is on the blessings occurring from 'Ruku', Sujūd' and 'Salaat' but there is also an indication about the blessings associated with the second part of the Kalimah, (Muhammadur Rasuulullaah).
Imam Razi has related that in the treaty of Hudaybiyah, on the refusal and insistence of the unbeliever not to write (Muhammad Rasulullah) and to substitute it by 'Muhammad bin Abdullah', Almighty Allah asserts that He himself bears testimony to the Prophethood of Muhammad (Sallallaahu `Alayhi Wa Sallam). When the Sender confirms personally about a particular person to be his messenger, then the non-acceptance by any number of people does not matter. To confirm this testimony, Almighty Allah made the statement Muhammadur Rasuulullaah (Muhammad is the Messenger of Allah).
There are other important subjects in these Verses. One of them relates to the glow on the face of a blessed person. It has been explained that a person who keeps a vigil at night for prayers develops such a glow on his face.
Imām Rāzi considers it an established fact that if two persons keep awake at night, one spending it in sensual and idle pleasures and the other uses his time in reciting the Qur'an, learning religious knowledge and offering prayers, they will get up with different facial expressions next morning. The latter described above will be because of his spiritual glow, will show himself quite a different person.
The third important thing is that Imām Mālik and a group of scholars, however, established 'Kufr' for those people who talk ill of the Sahabas and bear hatred against them.
45) Is not the time ripe for the hearts of those who believe to submit to Allah's reminder? 
ALAM YA'NI LIL-LA-DHII-NA AAMANUU AN TAKH-SHA-`A QULUUBUHUM LI-DHIK-RILLAAH
[ SŪRAH AL-HADĪD, 57:16 ]
 SŪRAH AL-MU'MINŪN, 23:109-110
 SŪRAH AL-HADĪD, 57:16