Sayyiduna Abu al-Darda' (may Allah be pleased with him) narrates: The Prophet (peace and blessings be upon him) passed by a river; he held out a large bowl that he had with him and then said: Allah Almighty will make it reach people whom He will benefit through it.
Imam al-Tabarani recorded this report in al-Mu'jam al-Kabir; its chain contains a narrator, Abu Bakr bin Abi Maryam, and he is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الطهارة / 1109