I met Abu Dharr and said to him, "Tell me a hadith."He replied, "Yes. The Messenger of Allah ﷺ said, 'There is no Muslim servant who spends a pair of any kind of his wealth in the cause of Allah except that the keepers of Paradise will all welcome him, each one inviting him to what he has.'"I asked, "How is that?"He answered, "If it is camels, then two camels, and if it is cattle, then two cows."
لقيت أبا ذر قال: قلت: حدثني قال: نعم، قال رسول الله ﷺ: ما من عبد مسلم ينفق من كل مال له زوجين في سبيل الله إلا استقبلته حجبة الجنة كلهم يدعوه إلى ما عنده، قلت: وكيف ذلك؟ قال: إن كانت إبلا فبعيرين، وإن كانت بقرا فبقرتين.
Nasai (3185), Ahmad (21413), and Ibn Hibban (4643), who graded it sahih, and Hakim (2/86), narrated it through multiple routes from Hasan, from Sasaa bin Muawiya, and he mentioned it. The wording given here is that of Nasai. Its chain of transmission is sahih, and Hasan explicitly stated that he heard it directly, in the versions of Ahmad and Ibn Hibban.Hakim said, "This is a hadith with a sahih chain of transmission, and Sasaa bin Muawiya was one of the most prominent of the Arabs."Similar in meaning is what has been reported from Ali bin Abu Talib, Abu Darda, Abu Hurairah, Abu Umama Bahili, Abdullah bin Umar, Abdullah bin Amr, Jabir bin Abdullah, and Imran bin Husayn, all of them narrating from the Messenger of Allah ﷺ that he said, "Whoever sends his contribution in the way of Allah while remaining in his own house will receive seven hundred dirhams for every dirham. And whoever personally goes out to fight in the way of Allah and spends toward that cause will receive seven hundred thousand dirhams for every dirham." Then he recited this verse, "And Allah multiplies for whom He wills" [Baqarah 2:261].Ibn Majah (2761) narrated it from Harun bin Abdullah Hammal, who said, Ibn Abu Fudayk told us, from Khalil bin Abdullah, from Hasan, from Ali, Abu Darda, Abu Hurairah, Abu Umama, Abdullah bin Umar, Abdullah bin Amr, Jabir, and Imran, and they mentioned it.Ibn Abu Hatim narrated it in his Tafsir (2730) from Khalil bin Abdullah, from Hasan, from Imran alone. In its chain of transmission is Khalil bin Abdullah, who is unknown, as Ibn Hajar said.Munziri said in Targhib (1960), "Hasan did not hear directly from Imran nor from Ibn Umar. Hakim said that most of our teachers hold that Hasan did hear from Imran." The majority hold that he did not hear directly from Abu Hurairah either, though he did hear from others among them. And Allah knows best.Busiri also criticized this hadith on account of Khalil's being unknown, and then quoted this same statement from Munziri.As for what has been reported from Muaz bin Anas as a raised hadith, "Prayer, fasting, and remembrance are multiplied over spending in the way of Allah seven hundredfold," this is daif.Abu Dawud (2498), Hakim (2/78), and from him Bayhaqi (9/172), narrated it from the hadith of Zabban bin Fayd, from Sahl bin Muaz, from his father, and he mentioned it. In its chain of transmission is Zabban bin Fayd, who is daif, as Ibn Hibban said, "His hadith is extremely objectionable, and he alone transmits from Sahl bin Muaz a body of narrations that appear to be fabricated, he cannot be relied upon." Hakim, however, said, "Its chain of transmission is sahih."