It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that he used to say: "Memorise this hadith," and he would attribute it directly (marfu') to the Prophet (peace and blessings be upon him), that he (peace and blessings be upon him) used to make this supplication between the two corners (of the House of Allah): 'Rabbi qanni'ni bima razaqtani, wa barik li fihi, wakhluf 'alayya kulla gha'ibatin li bikhayr' (My Lord, make me content with what You have provided me, bless me in it, and replace for me everything of mine that is lost with something better). The chain of this hadith is sahih (authentic), but the two Shaykhs (Bukhari and Muslim) did not record it, because they did not use Sa'id bin Zayd, the brother of Hammad bin Zayd, as evidence.