Sahih al-Bukhari Book 68, Hadith 53
Allah's Messenger (ﷺ) said, "I and the one who looks after an orphan will be like this in Paradise," showing
his middle and index fingers and separating them.
The Prophet (ﷺ) pointed with his hand towards Yemen and said twice, "Faith is there," and then pointed towards the East, and said, "Verily, sternness and mercilessness are the qualities of those who are busy with their camels and pay no attention to their religion, where the two sides of the head of Satan will appear," namely, the tribes of Rabl'a and Muqar.
A man came to the Prophet (ﷺ) and said, "O Allah's Messenger (ﷺ)! A black child has been born for me." The Prophet asked him, "Have you got camels?" The man said, "Yes." The Prophet (ﷺ) asked him, "What color are they?" The man replied, "Red." The Prophet (ﷺ) said, "Is there a grey one among them?' The man replied, "Yes." The Prophet (ﷺ) said, "Whence comes that?" He said, "May be it is because of heredity." The Prophet (ﷺ) said, "May be your latest son has this color because of heredity."