Narrated Ibn Masud: We used to fight in the holy battles in the company of the Prophet and we had no wives with us. So we said, "O Allah's Apostle! Shall we get castrated?" The Prophet forbade us to do so.

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."

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.

Narrated Sa`d bin Abi Waqqas: The Prophet prevented `Uthman bin Mazun from that (not marrying), and had he allowed him, we would have got ourselves castrated.

Narrated 'Abdullah: We used to participate in the holy battles led by Allah's Apostle and we had nothing (no wives) with us. So we said, "Shall we get ourselves castrated?" He forbade us that and then allowed us to marry women with a temporary contract (2) and recited to us: -- 'O you who believe ! Make not unlawful the good things which Allah has made lawful for you, but commit no transgression.' (5.87)

Narrated Abu Huraira: I said, "O Allah's Apostle! I am a young man and I am afraid that I may commit illegal sexual intercourse and I cannot afford to marry." He kept silent, and then repeated my question once again, but he kept silent. I said the same (for the third time) and he remained silent. Then repeated my question (for the fourth time), and only then the Prophet said, "O Abu Huraira! The pen has dried after writing what you are going to confront. So (it does not matter whether you) get yourself castrated or not."

Narrated `Aisha: I said, "O Allah's Apostle! Suppose you landed in a valley where there is a tree of which something has been eaten and then you found trees of which nothing has been eaten, of which tree would you let your camel graze?" He said, "(I will let my camel graze) of the one of which nothing has been eaten before." (The sub-narrator added: `Aisha meant that Allah's Apostle had not married a virgin besides herself .)

Narrated `Aisha: Allah's Apostle said (to me), "You have been shown to me twice in (my) dreams. A man was carrying you in a silken cloth and said to me, 'This is your wife.' I uncovered it; and behold, it was you. I said to myself, 'If this dream is from Allah, He will cause it to come true.' "