Riyad as-SalihinChapter 16Hadith 821
Full Sharh — Riyad as-Salihin 821
وعن أبي أمامة رضي الله عنه قال: قيل لرسول الله صلى الله عليه وسلم: أي الدعاء أسمع؟ قال: "جوف الليل الآخر ودبر الصلوات المكتوبات". رواه الترمذي وقال حديث حسن.
English Translation
Abu Umamah (May Allah be pleased with him) reported:: The Messenger of Allah (ﷺ) was asked: "At what time does the supplication find the greatest response?" He (ﷺ) replied, "A supplication made during the middle of the last part of the night and after the conclusion of the obligatory prayers.".
Source
Riyad as-Salihin(رياض الصالحين)
The Book of Du'a (Supplications)
Hadith Number
821