Someone asked, "Messenger of Allah ﷺ, which supplication is most readily heard?"He replied, "The one made in the depths of the latter part of the night, and after the prescribed prayers."
حدثنا محمد بن يحيى الثقفي المروزي حدثنا حفص بن غياث عن ابن جريج عن عبد الرحمن بن سابط
قيل يا رسول الله ﷺ أي الدعاء أسمع قال جوف الليل الآخر ودبر الصلوات المكتوبات
No references are available.
[Its isnad is daif]. Nasai narrated it in Amal al-Yawm wal-Layla, no. 108, from Muhammad bin Yahya, with the same chain. Abdul-Rahman bin Sabit's narration from Abu Umama is disconnected, as he did not hear from him.There is also a version on this topic from Abu Dharr [Ahmad, 5/179] and Ibn Umar [Bazzar, 4/43, no. 3151, and Abu Yaala, no. 5682].