Virtues of Madinah

The Prophet said, "Medina is a sanctuary from that place to that. Its trees should not be cut and no heresy should be innovated nor any sin should be committed in it, and whoever innovates in it an heresy or commits sins (bad deeds), then he will incur the curse of Allah, the angels, and all the people."

Transferance Of Debt from One Person to Another (Al-Hawaala)

Ibn Abbas said, "In the verse: To every one We have appointed ' (Muwaliya Mawaliya means one's) heirs (4.33).' (And regarding the verse) 'And those with whom your right hands have made a pledge.' Ibn 'Abbas said, "When the emigrants came to the Prophet in Medina, the emigrant would inherit the Ansari while the latter's relatives would not inherit him because of the bond of brotherhood which the Prophet established between them (i.e. the emigrants and the Ansar). When the verse: 'And to everyone We have appointed heirs'(4.33) was revealed, it cancelled (the bond [the pledge] of brotherhood regarding inheritance)." Then he said, "The verse: To those also to whom your right  hands have pledged, remained valid regarding co-operation and mutual advice, while the matter of inheritance was excluded and it became permissible to assign something in one's testament to the person who had the right of inheriting before." (Bukhari)

Friday Prayer

While Umar bin Al-Khattab was standing and delivering the sermon on a Friday, one of the companions of the Prophet, who was one of the foremost Muhajirs (emigrants) came. 'Umar said to him, "What is the time now ?"
He replied, "I was busy and could not go back to my house till I heard the Adhan. I did not perform more than the ablution." Thereupon 'Umar said to him, "Did you perform only the ablution although you know that Allah's Apostle (p.b.u.h) used to order us to take a bathe (on Fridays) ?" [Bukhari]Free

Ablutions (Wudu)

Allah's Apostle said, "The prayer of person who does, Hadath (passes, urine, stool or wind) is not accepted till he performs (repeats) the ablution." A person from Hadaramout asked Abu Huraira, "What is 'Hadath' ?" Abu Huraira replied, " 'Hadath' means the passing of wind from the anus." [Bukhari]

Belief

The Prophet said, "Whoever possesses the following three qualities will taste the sweetness of faith:

1. The one to whom Allah and His Apostle become dearer than anything else.

2. Who loves a person and he loves him only for Allah's sake.

3. Who hates to revert to disbelief (Atheism) after Allah has brought (saved) him out from it, as he hates to be thrown in fire." [Bukhari]