This is from Sahih Al Bukhari which is the bedrock of the 6 Pillars of Islam as practiced today by 1.8 Billion Muslims. Even Shia hadiths are greatly influenced by Al Bukhari. For almost a thousand year, Muslims had no problem with it, but now they are dumb founded & totally embarrassed, & looking for ways to deny it & present an Islam palatable to you Westerners. Here Muhammad is teaching the Muslims that when you have sex, the baby will resemble the one who ejaculated first & accordingly this knowledge is the evidence he is a prophet. If you want to laugh more go sunnah.com
Narrated Anas:
`Abdullah bin Salam heard the news of the arrival of Allah's Messenger (ﷺ) (at Medina) while he was on a farm collecting its fruits. So he came to the Prophet (ﷺ) and said, "I will ask you about three things which nobody knows unless he be a prophet. Firstly, what is the first portent of the Hour? What is the first meal of the people of Paradise? And what makes a baby look like its father or mother?'............The Prophet (ﷺ) said.........And if a man's discharge proceeded that of the woman, then the child resembles the father, and if the woman's discharge proceeded that of the man, then the child resembles the mother.
Sahih al-Bukhari » Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
USC-MSA web (English) reference : Vol. 6, Book 60, Hadith 7
Arabic reference : Book 65, Hadith 4480
Narrated Anas:
`Abdullah bin Salam heard the news of the arrival of Allah's Messenger (ﷺ) (at Medina) while he was on a farm collecting its fruits. So he came to the Prophet (ﷺ) and said, "I will ask you about three things which nobody knows unless he be a prophet. Firstly, what is the first portent of the Hour? What is the first meal of the people of Paradise? And what makes a baby look like its father or mother?'............The Prophet (ﷺ) said.........And if a man's discharge proceeded that of the woman, then the child resembles the father, and if the woman's discharge proceeded that of the man, then the child resembles the mother.
Sahih al-Bukhari » Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
USC-MSA web (English) reference : Vol. 6, Book 60, Hadith 7
Arabic reference : Book 65, Hadith 4480
Wherein both will be those (maidens) restraining their glances upon their husbands, whom no man or jinn yatmithhunna (has opened their hymens with sexual intercourse) before them (Quran 55:56, Mushin)