I heard the Messenger of Allah ﷺ say, "When you trade through inah, take hold of the tails of cattle, become content with farming, and abandon jihad, Allah will impose upon you a humiliation that He will not remove until you return to your religion."
سمعت رسول الله ﷺ يقول: إذا تبايعتم بالعينة، وأخذتم أذناب البقر، ورضيتم بالزرع، وتركتم الجهاد سلط الله عليكم ذلا لا ينزعه حتى ترجعوا إلى دينكم.
It was narrated by Abu Dawud (3462) and Bayhaqi in al-Kubra (5/316), both from the hadith of Haywa bin Shurayh, from Ishaq Abu Abdul-Rahman, that Ata Khurasani told him that Nafi told him this. Ishaq Abu Abdul-Rahman is Ishaq bin Usayd Abu Abdul-Rahman Ansari. Abu Hatim said, "A shaykh who is not well known, and one should not occupy oneself with him." Ibn Adi said, "Majhul (unknown)." As for Ibn Hajar, he said in al-Taqrib, "There is weakness in him."The hadith has another chain of transmission, narrated by Ahmad (4825), Tabarani in al-Kabir (13585), Abu Yaala (5659), and Abu Naeem in al-Hilya (1/313-314), all of them through Amash, from Ata bin Abu Rabah, from Ibn Umar, who said, I heard the Messenger of Allah ﷺ say, "When people become stingy with the dinar and dirham, engage in trade through eena, follow the tails of cattle, and abandon jihad in the path of Allah, Allah will send down calamity upon them, and He will not lift it from them until they return to their religion." Ata bin Abu Rabah did not hear from Ibn Umar, he only saw him, as Imam Ahmad and Ibn Madini stated, so there is a break in the chain.The hadith has a third chain of transmission, which is what Imam Ahmad narrated (5007) from Yahya bin Abdul-Malik bin Abu Ghaniya, who said, Abu Janab informed us, from Shahr bin Hawshab, from Ibn Umar, from the Prophet ﷺ, who said, "If you abandon jihad, take up the tails of cattle, and engage in trade through eena, Allah will impose humiliation upon your necks, which will not be removed from you until you repent to Allah and return to what you were upon." This chain contains Abu Janab, who is Yahya bin Abu Haya Kalbi. Ahmad, Ibn Main, and others said, "There is no harm in him, though he used to practice tadlis."I say, by combining these paths together, the hadith becomes hasan according to the standard of Tirmidhi, since none of the narrators in them stand accused.Eena, with the ayn vowelled as kasra, means that a person sells something to another for a deferred price and delivers it to the buyer, then buys it back before receiving the price, for a lesser price than he sold it for, and pays this lesser price in cash. However, if three parties are involved in the sale, it falls outside the category of eena sale. Its form is that a man buys goods from the seller on deferred payment and takes possession of the goods, then sells them to a third party, other than the original seller, for less than he bought them for, in cash. This is permissible by unanimous agreement of the scholars, since all the conditions of a valid sale are fulfilled in it.