Hadiths 7.6 to 7.9

7.6:
Narrated Anas:
The Prophet I used to go round (have sexual relations with)
all his wives in one night, and he had nine wives.

7.7:
Narrated Sa`id bin Jubair: Ibn `Abbas asked me, "Are you
married?" I replied, "No." He said, "Marry, for the best
person of this (Muslim) nation (i.e., Muhammad) of all other
Muslims, had the largest number of wives."

7.8:
Narrated `Umar bin Al−Khattab: The Prophet said, "The rewards
(of deeds) are according to the intention, and everybody will
get the reward for what he has intended. So whoever emigrated
for Allah's and His Apostle's sake, his emigration was for
Allah and His Apostle; and whoever emigrated for worldly
benefits, or to marry a woman, then his emigration was for the
thing for what he emigrated for." (1)

7.9:
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.