Habal al-habalah means that a she-camel delivers an offspring and then the offspring which it delivers becomes pregnant.
Sunan Abi Dawud Book 23, Hadith 56
← Previous Hadith The Messenger of Allah (ﷺ) forbade the transaction called habal al-habalah.

Sunan Abi Dawud Book 23, Hadith 55 Next Hadith → A time is certainly coming to mankind when people will bite each other and a rich man will hold fast, what he has in his possession (i.e. his property), though he was not commanded for that. Allah, Most High, said: "And do not forget liberality between yourselves." The men who are forced will contract sale while the Prophet (ﷺ) forbade forced contract, one which involves some uncertainty, and the sale of fruit before it is ripe.

Sunan Abi Dawud Book 23, Hadith 57