Representation, Authorization, Business by Proxy

Volume 3, Book 38, Number 496:
Narrated 'Ali: Allah's Apostle ordered me to distribute the saddles and skins of the Budn which had slaughtered.
Volume 3, Book 38, Number 497:
Narrated 'Uqba bin Amir:
that the Prophet had given him sheep to distribute among his companions and a male kid was left (after the distribution). When he informed the Prophet of it, he said (to him), "Offer it as a sacrifice on your behalf."
Volume 3, Book 38, Number 498:
Narrated 'Abdur-Rahman bin 'Auf:
I got an agreement written between me and Umaiya bin Khalaf that Umaiya would look after my property (or family) in Mecca and I would look after his in Medina. When I mentioned the word 'Ar-Rahman' in the documents, Umaiya said, "I do not know 'Ar-Rahman.' Write down to me your name, (with which you called yourself) in the Pre-lslamic Period of Ignorance." So, I wrote my name ' 'Abdu 'Amr'. On the day (of the battle) of Badr, when all the people went to sleep, I went up the hill to protect him. Bilal(1) saw him (i.e. Umaiya) and went to a gathering of Ansar and said, "(Here is) Umaiya bin Khalaf! Woe to me if he escapes!" So, a group of Ansar went out with Bilal to follow us ('Abdur-Rahman and Umaiya). Being afraid that they would catch us, I left Umaiya's son for them to keep them busy but the Ansar killed the son and insisted on following us. Umaiya was a fat man, and when they approached us, I told him to kneel down, and he knelt, and I laid myself on him to protect him, but the Ansar killed him by passing their swords underneath me, and one of them injured my foot with his sword. (The sub narrator said, " 'Abdur-Rahman used to show us the trace of the wound on the back of his foot.")
Volume 3, Book 38, Number 499:
Narrated Abu Said Al-Khudri and Abu Huraira:
Allah's Apostle employed someone as a governor at Khaibar. When the man came to Medina, he brought with him dates called Janib. The Prophet asked him, "Are all the dates of Khaibar of this kind?" The man replied, "(No), we exchange two Sa's of bad dates for one Sa of this kind of dates (i.e. Janib), or exchange three Sa's for two." On that, the Prophet said, "Don't do so, as it is a kind of usury (Riba) but sell the dates of inferior quality for money, and then buy Janib with the money". The Prophet said the same thing about dates sold by weight. (See Hadith No. 506).
Volume 3, Book 38, Number 500:
Narrated Ibn Ka'b bin Malik from his father:
We had some sheep which used to graze at Sala'. One of our slavegirls saw a sheep dying and she broke a stone and slaughtered the sheep with it. My father said to the people, "Don't eat it till I ask the Prophet about it (or till I send somebody to ask the Prophet)." So, he asked or sent somebody to ask the Prophet, and the Prophet permitted him to eat it. 'Ubaidullah (a sub-narrator) said, "I admire that girl, for though she was a slave-girl, she dared to slaughter the sheep . "
Volume 3, Book 38, Number 501:
Narrated Abu Huraira:
The Prophet owed somebody a camel of a certain age. When he came to demand it back, the Prophet said (to some people), "Give him (his due)." When the people searched for a camel of that age, they found none, but found a camel one year older. The Prophet said, "Give (it to) him." On that, the man remarked, "You have given me my right in full. May Allah give you in full." The Prophet said, "The best amongst you is the one who pays the rights of others generously."