Hadiths 7.10 to 7.11

7.10:
Narrated Anas bin Malik: `Abdur−Rahman bin `Auf came (from
Mecca to Medina) and the Prophet made a bond of brotherhood
between him and Sa`d bin Ar−Rabi` Al−Ansari. Al−Ansari had two
wives, so he suggested that `Abdur−Rahman take half, his wives
and property. `Abdur−Rahman replied, "May Allah bless you with
your wives and property. Kindly show me the market." So
`Abdur−Rahman went to the market and gained (in bargains) some
dried yoghurt and some butter. After a few days the Prophet
saw `Abdur−Rahman with some yellow stains on his clothes and
asked him, "What is that, O `Abdur−Rahman?" He replied, "I had
married an Ansari woman." The Prophet asked, "How much Mahr
did you give her?" He replied, "The weight of one (date) stone
of gold." The Prophet said, "Offer a banquet, even with one
sheep."

7.11:
Narrated Sa`d bin Abi Waqqas: Allah's Apostle forbade `Uthman
bin Maz'un to abstain from marrying (and other pleasures) and
if he had allowed him, we would have gotten ourselves
castrated.