When two-thirds of the night had passed, the Messenger of Allah ﷺ would rise and say, "People, remember Allah, remember Allah! The first blast has come, followed by the second. Death has come with all that it brings. Death has come with all that it brings."Ubayy said, "I asked, 'Messenger of Allah, I send blessings upon you frequently. How much of my prayer should I devote to sending blessings upon you?'He replied, 'As much as you wish.'I said, 'A quarter?'He said, 'As much as you wish, but if you increase it, it will be better for you.'I said, 'A half?'He said, 'As much as you wish, but if you increase it, it will be better for you.'I said, 'Two-thirds?'He said, 'As much as you wish, but if you increase it, it will be better for you.'I said, 'Shall I devote all of my prayer to sending blessings upon you?'He said, 'Then your concerns will be taken care of and your sins will be forgiven.'"
حدثنا هناد حدثنا قبيصة عن سفيان عن عبد الله بن محمد بن عقيل
كان رسول الله ﷺ إذا ذهب ثلثا الليل قام فقال يا أيها الناس اذكروا الله اذكروا الله جاءت الراجفة تتبعها الرادفة جاء الموت بما فيه جاء الموت بما فيه قال أبي قلت يا رسول الله إني أكثر الصلاة عليك فكم أجعل لك من صلاتي فقال ما شئت قال قلت الربع قال ما شئت فإن زدت فهو خير لك قلت النصف قال ما شئت فإن زدت فهو خير لك قال قلت فالثلثين قال ما شئت فإن زدت فهو خير لك قلت أجعل لك صلاتي كلها قال إذا تكفى همك ويغفر لك ذنبك
Its isnad is daif.It was also narrated by Ahmad, 5/136, from the hadith of Sufyan Thawri with the same wording, using an "an" formula. Hakim graded it sahih, 2/513, from the hadith of Qabisa bin Uqba, and Dhahabi agreed with him. See the preceding hadith, 2450.