It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "There are two blessings regarding which most people are at a loss: health and free time." This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.

It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him), while advising a man, said: "Take advantage of five things before five: your youth before your old age, your health before your sickness, your wealth before your poverty and hardship, your free time before your busyness, and your life before your death." This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.

It is narrated from Sayyiduna Sahl bin Sa'd (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) passed by Dhu al-Hulayfah and saw a dead sheep with its leg raised upwards. He (peace and blessings be upon him) said: "Do you think that this sheep is worthless and contemptible in the eyes of its owner?" The Companions said: Yes. He (peace and blessings be upon him) said: "By the One in whose Hand is my soul! The world is even more worthless in the sight of Allah than this sheep is to its owner. And if the world were worth even the wing of a mosquito in the sight of Allah, He would not give a disbeliever even a sip of water from it." This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.