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]

Bathing (Ghusl)

Whenever the Prophet took a bath after Janaba he started by washing His hands and then performed ablution like that for the prayer. After that he would put his fingers in water and move the roots of his hair with them, and then pour three handfuls of water over his head and then pour water all over his body. [Bukhari]

Knowledge

Once Allah's Apostle gave a letter to a person and ordered him to go and deliver it to the Governor of Bahrain. (He did so) and the Governor of Bahrain sent it to Chousroes, who read that letter and then tore it to pieces. (The sub-natttator [Ibn Shihab] thinks that Ibn Al-Musaiyab said that Allah's Apostle invoked Allah against them (saying), "May Allah tear them into pieces, and disperse them all totally.)" [Bukhari]

Fear Prayer

I asked Az-Zuhri, "Did the Prophet ever offer the Fear Prayer?" Az-Zuhri said, "I was told by Salim that 'Abdullah bin Umar I had said, 'I took part in a holy battle with Allah's Apostle I in Najid. We faced the enemy and arranged ourselves in rows. Then Allah's Apostle (p.b.u.h) stood up to lead the prayer and one party stood to pray with him while the other faced the enemy. Allah's Apostle (p.b.u.h) and the former party bowed and performed two prostrations. Then that party left and took the place of those who had not prayed. Allah's Apostle prayed one Raka (with the latter) and performed two prostrations and finished his prayer with Taslim. Then everyone of them bowed once and performed two prostrations individually.'" [Bukhari]

Punishment of Disbelievers at War with Allah and His Apostle 02

A group of people from 'Ukl (tribe) came to the Prophet and they were living with the people of As-Suffa, but they became ill as the climate of Medina did not suit them, so they said, "O Allah's Apostle ! Provide us with milk." The Prophet said, I see no other way for you than to use the camels of Allah's Apostle."
 So they went and drank the milk and urine of the camels, (as medicine) and became healthy and fat. Then they killed the shepherd and took the camels away. When a help-seeker came to Allah's Apostle, he sent some men in their pursuit, and they were captured and brought before mid day. The Prophet ordered for some iron pieces to be made red hot, and their eyes were branded with them and their hands and feet were cut off and were not cauterized.
Then they were put at a place called Al-Harra, and when they asked for water to drink they were not given till they died. (Abu Qilaba said, "Those people committed theft and murder and fought against Allah and His Apostle.") [Bukhari]