He married a 6 year old and had sex with a 9-year-old named Aisha (and he was 53 years old): Sahih Al-Bukhari 58:234 
He allowed men to marry and have sex with prepubescent girls: Surah 65:4 prescribes a waiting period for men who want to divorce their prepubescent child brides. 
He allowed men to beat their wives into submission: Surah 4:34; Sunan Abu Dawud 11:2141 (2146).
He hit his wife Aisha: Sahih Muslim 4:2127 (2256).
He said a man will not be asked as to why he beat his wife: Sunan Abu Dawud 11:2142 (2147); Sunan Ibn Majah 1986 (Dar-us-Salam Reference).
Aisha said that Muslim women suffered more than non-Muslim women: Sahih Al-Bukhari 72:715 (5825).
He said women were intellectually deficient: Sahih Al-Bukhari 6:301 (304), 24:541 (1462), 48:826 (2658).
He said women were religiously deficient: Sahih Al-Bukhari 6:301 (304), 24:541 (1462).
He said two women were worth the witness of one man: Surah 2:282; Sahih Al-Bukhari 6:301 (304), 48:826 (2658).
He allowed and encouraged his men to rape women: Surah 4:24, 23:6, 70:30; Sahih Al-Bukhari 59:459 (4138), 62:137 (5210); Sahih Muslim 8:3371 (3544), 8:3432 (3608), 8:3433 (3609); Sunan Abu Dawud 2155, 2172 (Dar-us-Salam Reference)
He said women were an evil omen: Sahih Al-Bukhari 52:110 (2858), 52:111 (2859), 62:30 (5093), 62:31 (5094), 62:32 (5095).
He compared women to land, where men can come whenever they like to sow their seeds: Surah 2:223; Jami At-Tirmidhi 2980 (Dar-us-Salam Reference).
He said women were a harmful thing to men: Sahih Al-Bukhari 62:33 (5096).
He said women annul prayers along with dogs and donkeys: Sahih Al-Bukhari 9:490 (511); Sahih Muslim 4:1032 (1137).
He said bad luck can be found in women: Al-Adab al-Mufrad al-Bukhari Hadith 916 (English Translation).
He said women are crooked: Sahih Al-Bukhari 62:113 (5184); Sahih Muslim 8:3466 (3650), 8:3467 (3643).
He said a woman should not arrange her own marriage and that an adulteress is the one who arranges her own marriage: Sunan Ibn Majah 1882 (Dar-us-Salam Reference).
He said a woman's marriage must be arranged by a male guardian: Sunan Ibn Majah 1879, 1880, 1881, 1882 (Dar-us-Salam Reference).
He said a woman's marriage is invalid if it was not arranged by a male guardian: Sunan Ibn Majah 1879 (Dar-us-Salam Reference).
He said a woman cannot travel without her male guardian or relative: Sahih Al-Bukhari 52:250 (3006).
He said women cannot be alone with non-related males: Sahih Al-Bukhari 52:250 (3006).
He would go to prayer with water spots visible on his clothes from where his child bride, Aisha, would clean off his semen stains: Sahih Al-Bukhari 4:229 (229), 231 (230), 232 (231), 233 (232).
He was viewed as a womanizer: al-Tabari, Volume IX, page 139.
He had sex with female slaves, which resulted in his wives Aisha and Hafsah pressuring him to stop. However, Muhammad had a "revelation" saying he could have sex with the female slave: Surah 66:1; Sunan An-Nasa'i 3411 (Dar-us-Salam Reference); Tafsir Al-Jalalayn on Surah 66:1.
He owned sex slaves: Surah 33:50.
He impregnated one of his slave girls: Ibn Ishaq's Sirat Rasul Allah, page 653.
He sold women and children for weapons and horses: Ibn Ishaq's Sirat Rasul Allah, page 466; Al-Waqidi's Kitab al-maghazi, page 257.
He told one of his wives who had freed her slave girl that she would have received a greater heavenly reward if she had given her slave to her uncle instead of freeing her: Sahih Al-Bukhari 47:765 (2592).
He took women and children as captives: Sahih Al-Bukhari 14:68 (947), 46:717 (2541).
In order to remove the temptation of sex between an unmarried couple, Muhammad told a woman (named Sahla bint Suhail) to put her breasts into the man's mouth (named Salim) and breastfeed him, which would then, according to Muhammad, technically make the man the foster child of the woman: Sahih Muslim 8:3424 (3600), 3425 (3601), 3426 (3602), 3427 (3603), 3428 (3604).
He gave his men a loophole to engage in prostitution & adultery by allowing them to have "temporary marriages" (called "nikah mut'ah") so they could satisfy their sexual desires when they were away from their wives: Surah 4:24, 5:87 (the context for Surah 5:87 is found in Sahih Al-Bukhari and Sahih Muslim); Sahih Al-Bukhari 60:139 (4615), 62:13 (5075); Sahih Muslim 8:3243 (3410).
He said women are required to cover themselves with a veil. When he said this, Muhammad's wife and the other Muslim women understood this to mean they had to cover their faces and head: Surah 24:31; Sahih Al-Bukhari 60:281 (4758), 60:282 (4759).
He said to not lash your wife like you lash your slave because you might have sex with her later that evening (but it is okay to lash her!): Sahih Al-Bukhari 60:466 (4942).
He told a man to throw sand in the mouths of crying women who lost their husbands: Sahih Muslim 4:2034 (2161).
His followers cruelly killed an old woman named Umm Qirfa by tying her legs to two different camels and tearing her apart: al-Tabari, Volume VIII, page 96; Ibn Ishaq's Sirat Rasul Allah, page 665.
He said if a man wants to have sex with his wife and she refuses, Allah will be displeased with her until she sexually satisfies his desire: Sahih Muslim 8:3367 (3540).
After a man raped a slave girl, Muhammad said he was entitled to it: Sahih Al-Bukhari 59:637 (4350).