It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him); he said that the Messenger of Allah (peace and blessings be upon him) said: "Whoever is generous (in spending) on his family on the day of Ashura, Allah Almighty will grant him abundance and plenty for the whole year."
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) only with this chain; Muhammad bin Isma'il al-Ja'fari is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الهاء / 9302
Hadith Gradingمحدثین:إسناده ضعيف، فيه محمد بن إسماعيل الجعفري منكر الحديث
Hadith Takhrij«قال الهيثمي: فيه محمد بن إسماعيل الجعفري قال أبو حاتم منكر الحديث «مجمع الزوائد ومنبع الفوائد، ج 3، ص 189»»