It is narrated from Sayyiduna Sahl bin Sa'd (may Allah be pleased with him) that we were present with the Messenger of Allah (peace and blessings be upon him) and he (peace and blessings be upon him) was describing the qualities of Paradise, until he (peace and blessings be upon him) completed his words, then he said: "In it (Paradise) are such blessings as no eye has ever seen, no ear has ever heard, and which have never occurred to the heart of any human being." Then he (peace and blessings be upon him) recited this verse: "Their sides forsake their beds." [Surah al-Sajdah: 16] Abu Sakhr says: I mentioned this to Imam al-Qurazi, and he said: These people concealed their deeds for the sake of Allah, so Allah also kept their reward concealed for them; so when they present themselves before Allah, their eyes will be comforted. This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that he said: It is written in the Torah that Allah Almighty has prepared, for those whose sides forsake their beds (that is, those who pray tahajjud), that which no eye has seen, no ear has heard, and which has never occurred to the heart of any human being, and which no angel brought near knows nor any prophet sent as a messenger. He said: And we read it (in the Qur'an) thus: [Surah al-Sajdah: 17] "So no soul knows what has been kept hidden for them of the comfort of the eyes, as a reward for what they used to do." This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) concerning this saying of Allah Almighty: "And We will surely let them taste the nearer punishment short of the greater punishment" [Surah al-Sajdah: 21] , that he said: (What is meant by it) is the day of the Battle of Badr. This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.