It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The heart of an old man remains young in the love of two things: the desire for a long life and abundance of wealth." This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim).

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Many a (humble) person, dishevelled, dust-covered and wearing two worn-out garments, whom people's eyes do not like to look at (regarding him as lowly), if he were to swear an oath relying on Allah, Allah would surely fulfil his oath." This hadith has a sahih (authentic) chain of narration. I think that Imam Muslim recorded it through the narration of Hafs bin Abdullah bin Anas.