Volume 3, Book 34, Number 302:
Narrated ‘Ali (radiallaahu `anhu):
I got an old she-camel as my share from the booty, and the Prophet had given me another from Al-Khumus. And when I intended to marry Fatima (radiallaahu `anhaa) (daughter of the Prophet), I arranged that a goldsmith from the tribe of Bani Qainuqa’ would accompany me in order to bring Idhkhir and then sell it to the goldsmiths and use its price for my marriage banquet.
Volume 3, Book 34, Number 303:
Narrated Ibn ‘Abbas (radiallaahu `anhu):
Allah’s Apostle (sallallaahu `alayhi wasallam) said, “Allah made Mecca a sanctuary and it was neither permitted for anyone before, nor will it be permitted for anyone after me (to fight in it). And fighting in it was made legal for me for a few hours of a day only. None is allowed to uproot its thorny shrubs or to cut down its trees or to chase its game or to pick up its Luqata (fallen things) except by a person who would announce it publicly.” ‘Abbas bin ‘Abdul-Muttlib (radiallaahu `anhu) requested the Prophet, “Except Al-Idhkhir, for our goldsmiths and for the roofs of our houses.” The Prophet (sallallaahu `alayhi wasallam) said, “Except Al-Idhkhir.” ‘Ikrima said, “Do you know what is meant by chasing its game? It is to drive it out of the shade and sit in its place.” Khalid said, “(‘Abbas said: Al-Idhkhir) for our goldsmiths and our graves.”
We learnt previously that we have to be careful while exchanging goods; one: they have to be of the same kind, two: they have to be of the same amount. For example, good dates for good dates and not bad dates for good dates.
If a person has to exchange one kind of goods with another, the right way to go about it is to sell those goods, and buy the desired goods with the money acquired. And that’s what’s being reiterated here (in the two narrations above). During that time in Arabia, people used to exchange Idhkhir (a kind of grass) with gold. What Ali (radiallaahu `anhu) did for his walima was that he sold whatever Idhkhir he collected to the goldsmiths and used the dirhams/dinars for the banquet preparations.
Hadith no. 366 is a repeat. Read it here.
Narrated ‘Abdul ‘Aziz:
Anas said, ‘When Allah’s Apostle invaded Khaibar, we offered the Fajr prayer there yearly in the morning) when it was still dark. The Prophet rode and Abu Talha rode too and I was riding behind Abu Talha. The Prophet passed through the lane of Khaibar quickly and my knee was touching the thigh of the Prophet . He uncovered his thigh and I saw the whiteness of the thigh of the Prophet. When he entered the town, he said, ‘Allahu Akbar! Khaibar is ruined. Whenever we approach near a (hostile) nation (to fight) then evil will be the morning of those who have been warned.’ He repeated this thrice. The people came out for their jobs and some of them said, ‘Muhammad (has come).’ (Some of our companions added, “With his army.”) We conquered Khaibar, took the captives, and the booty was collected. Dihya came and said, ‘O Allah’s Prophet! Give me a slave girl from the captives.’ The Prophet said, ‘Go and take any slave girl.’ He took Safiya bint Huyai. A man came to the Prophet and said, ‘O Allah’s Apostles! You gave Safiya bint Huyai to Dihya and she is the chief mistress of the tribes of Quraiza and An-Nadir and she befits none but you.’ So the Prophet said, ‘Bring him along with her.’ So Dihya came with her and when the Prophet saw her, he said to Dihya, ‘Take any slave girl other than her from the captives.’ Anas added: The Prophet then manumitted her and married her.”
Thabit asked Anas, “O Abu Hamza! What did the Prophet pay her (as Mahr)?” He said, “Her self was her Mahr for he manumitted her and then married her.” Anas added, “While on the way, Um Sulaim dressed her for marriage (ceremony) and at night she sent her as a bride to the Prophet . So the Prophet was a bridegroom and he said, ‘Whoever has anything (food) should bring it.’ He spread out a leather sheet (for the food) and some brought dates and others cooking butter. (I think he (Anas) mentioned As-Sawiq). So they prepared a dish of Hais (a kind of meal). And that was Walima (the marriage banquet) of Allah’s Apostle .”
Simple enough. Let’s not even try to compare this with today’s walimas. The followers of the Prophet (SAW) do not follow him when it comes to weddings. It’s sad.