Sayyidah Aishah (may Allah be pleased with her) said: The Prophet (peace and blessings be upon him) was sitting in the shade of Fari' when a man from Banu Bayadah came to him and said: I am ruined, for I had intercourse with my wife in the month of Ramadan. He (peace and blessings be upon him) said: "Free a slave." He said: I cannot find one. He (peace and blessings be upon him) said: "Feed sixty poor people." He said: I do not have it. Then a basket of dates containing twenty sa' was brought to him (peace and blessings be upon him). He (peace and blessings be upon him) said: "Give it in charity." He said: We do not have food for tonight's dinner. He (peace and blessings be upon him) said: "Then take it back to your family."
The Shaykh said: The additional details in this narration indicate the soundness of the memorisation of Sayyiduna Abu Hurayrah (may Allah be pleased with him) and of those below him regarding this story. His saying "containing twenty sa'" is a report that reached Muhammad bin Ja'far; Muhammad bin Ja'far said: I was told afterwards that that charity was twenty sa' of dates. In the hadith of Sayyiduna Abu Hurayrah (may Allah be pleased with him), fifteen sa' is narrated, and that is more authentic; and Allah knows best.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصيام / 8046