The Prophet sallallaahu ‘alayhi wa sallam said:
“The people of Paradise will not have any regrets except for those moments in which they were not engaged in the dhikr (remembrance) of Allaah.”
[Saheeh, related by lbnus-Sunnee in ‘Aml al-Yawma wal-Laylah (no.3). Refer to Saheehul-Jaami’ no.5446]
the Prophet sallallaahu ‘alayhi wa sallam said:
“There is no time in which the son of Aadam does not remember Allaah in it, except that it will be a source of regret for him on the Day of Judgement”
[Hasan, related by Abu Nu’aym in al-Hiliyatul-Awliyaa (51361-362). Refer to Saheehul-Jaami’ no.5720]
AI-Waabilus-Sayyib min Kalimit-Tayyib (pp.78-82).
Imaam ibn al-Qayyim al-Jawziyyah (d.751 H), rahimahullaah
Source: From al-Istiqaamah magazine Shawwal 1418H/ February 1998
Further reading: http://abdurrahman.org/zikr/polishinghearts.html
Hudhayfah ibn Al-Yaman (may Allah be pleased with him) narrated that the Prophet (peace and blessings be upon him) said, ” Indeed whenever a believer meets another believer takes his hand and shakes it, sins fall from both of them the same way leaves fall off a tree.”
Collected by At-Tabarani in his Awsot (245) graded Saheeh by Shaykh Al-Albani in his Silsilahtus Saheeh. 6/431
Abu Dharr (May Allah be pleased with him)reported: The Prophet (sallallaahu ’alayhi wa sallam) said, “In the morning, charity is due on every joint bone of the body of everyone of you. Every utterance of Allah’s Glorification (i.e., saying Subhan Allah) is an act of charity, and every utterance of His Praise (i.e., saying Al-hamdu lillah) is an act of charity and every utterance of declaration of His Greatness (i.e., saying La ilaha illAllah) is an act of charity; and enjoining M`aruf (good) is an act of charity, and forbidding Munkar (evil) is an act of charity, and two Rak`ah Duha prayers which one performs in the forenoon is equal to all this (in reward).” [Muslim].
Commentary: “Charity is due from every joint bone” means that when a person gets up in the morning, it is obligatory for him to thank Allah for having every joint of his intact. Therefore, one must praise and glorify Allah. Since a single invocation of the words mentioned in this Hadith is equivalent to one Sadaqah, one must say these words for 360 times – a number which equals the number of joints in man’s body. Moreover, to enjoin someone to do what is good and dissuade somebody from vice constitutes Sadaqah. However, if one performs two Rak`ah of Duha prayer, it will serve for Sadaqah for all the joints of the body. Thus, this Hadith highlights the merits and importance of Duha prayer. We also learn from this Hadith that Sadaqah is not restricted to spending money alone but also has a vast meaning and covers all forms of virtues mentioned here.
Source of the above : Merit of the (Optional) Duha (Forenoon) Prayer – Riyadh ul Saleheen
The Virtues of Fasting ‘Ashura (10th of Muharram)
The Prophet, peace be upon him, said:
“For fasting the day of ‘Ashura, I hope that Allah will accept it as expiation for the year that went before.” [Reported by Muslim, 1976]
Ibn ‘Abbas, may Allah be pleased with them both, said:
“I never saw the Messenger of Allah, upon whom be peace, so keen to fast any day and give it priority over any other than this day, the day of ‘Ashura, and this month, meaning Ramadhan.” [Reported by al-Bukhari, 1867]
‘Abdullah ibn ‘Abbas, may Allah be pleased with them both, said:
“When the Messenger of Allah, peace be upon him, fasted on ‘Ashura and commanded the Muslims to fast as well, they said, ‘O Messenger of Allah, it is a day that is venerated by the Jews and Christians.’ The Messenger of Allah, peace be upon him, said:
‘If I live to see the next year, insha’Allah, we will fast on the ninth day too.’
But it so happened that the Messenger of Allah, peace be upon him, passed away before the next year came.” [Reported by Muslim, 1916]
Aboo Dawood (rahimahullaah) reported (no. 345) from Aws ibn Aws ath-Thaqafee (radiallaahu ‘anhu): I heard Allaah’s Messenger (salallaahu ‘alaihi wa sallam) say:
“Whoever washes his head on the day of Jumu’ah, and takes a bath and arrives in time, and he walks and he does not ride, and he draws close to the imaam, and he listens and he does not speak. Then for every step which he takes, there will be for him the reward of a year: the reward of fasting it and standing in Prayer.”
Shaikh al-Albaanee (rahimahullaah) said this hadeeth is (saheeh) authentic.
Further Reading :
‘Arafah on Saturday 5ht November 2011 (9 Dhul-Hijjah 1432)
The ninth day of Dhul-Hijjah is the day of ’Arafah, since it is on this day that the pilgrims gather at the mountain plain of ’Arafah, praying and supplicating to their Lord.
It is mustahabb (highly recommended) for those who are not pilgrims to fast on this day, since the Prophet (sallallaahu ’alayhi wa sallam) was asked about fasting on the day of ’Arafah, so he said, “It expiates the sins of the past year and the coming year.” 
Likewise, the Prophet (sallallaahu ’alayhi wa sallam) said, ‘There is no day on which Allaah frees people from the Fire more so than on the day of ’Arafah. He comes close to those (people standing on ’Arafah), and then He reveals before His Angels saying, ‘What are these people seeking.” 
Imaam at-Tirmidhee (d.275H) – rahimahullaah – said, “The People of Knowledge consider it recommended to fast on the day of ’Arafah, except for those at ’Arafah.” 
 Related by Muslim (no. 1162), from Aboo Qataadah (radiyallaahu ’anhu).
 Related by Muslim (no. 1348), from ’Aa‘ishah (radiyallaahu ’anhaa).
 Refer to Jaami’ut-Tirmidhee (3/377).
Buraydah (may Allah be pleased with him) said:
The Messenger of Allah (peace be upon him) heard a man saying:
“O Allah, I ask You, I bear witness that there is none worthy of worship but You, the One, the Self-Sufficient Master Whom all creatures need, Who begets not, nor was He begotten, And there is none coequal or comparable to Him”
اللهم إني أسألك بأني أشهد أنك أنت الله لا إله إلا أنت الأحد الصمد الذي لم يلد ولم يولد ولم يكن له كفوًا أحد
Allaahumma innee as aluka bi annee ash-hadhu annaka antallaah, Laa ilaaha illaa anta, Al Ahad As-Samad, alladhee lam yalid walam yoolad, wa lam yakullahoo kufuwan Ahad
and he (peace be upon him) said: You have supplicated Allah using His Greatest Name, when asked with this name He gives, and when supplicated by this name He answers.
Related by the Four Compilers of Hadith (Imams Abu Dawud, Al-Tirmidhy, Al-Nasa’y and Ibn Majah) and Ibn Hibban graded it as Sahih
Source : Sheikh Ibn Baaz’s Tuhfit Al-Akhyar – alifta.net
اللّهُـمَّ ما أَصْبَـَحَ بي مِـنْ نِعْـمَةٍ أَو بِأَحَـدٍ مِـنْ خَلْـقِك ، فَمِـنْكَ وَحْـدَكَ لا شريكَ لَـك ، فَلَـكَ الْحَمْـدُ وَلَـكَ الشُّكْـر
Allahumma maa ‘asbaha bee min ni’matin, ‘aw bi’ahadin min khalqika faminka wahdaka laa shareeka laka,
O Allaah, whatever blessing has been received by me or anyone of Your Creation is from You alone, You have no partner. All praise is for you and thanks is to You.
When you say this in the evening, you should say:
Allaahumma maa ‘amsaa bee..: “O Allaah, as I..enter this evening…”
Whoever recites this in the morning, has completed his obligation to thank Allaah for that day; and whoever says it in the evening, has completed his obligation for that night.
Abu Dawood 4/318, An-Nasaai ‘Amalul-Yawm wal-Laylah (no.7), Ibn As-Sunni (no.41), Ibn Hibban no.2361). Its chain of transmission is good (Hasan), Ibn Baaz, p.24.