Sayyidah Aishah Siddiqah (may Allah be pleased with her) narrates: The Prophet (peace and blessings be upon him) said: "Caution is of no avail against destiny, and supplication benefits both in what has already descended and in what has not yet descended. Supplication meets the affliction, and then the two keep wrestling with each other until the Day of Resurrection."
Tabarani recorded it in al-Mu'jam al-Awsat, and al-Bazzar recorded a similar report; its chain contains a narrator, Zakariyya bin Manzur, whom Ahmad bin Salih al-Misri declared thiqah (trustworthy) and the majority declared da'if (weak); the rest of its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأدعية / 17192