Mustadrak al-Hakim — Hadith 1893

It is narrated from Sayyiduna Shaddad bin Aws (may Allah be pleased with him), who was a Companion who fought at Badr, that they were on a journey when the people stopped at a place to have their morning meal. Shaddad (may Allah be pleased with him) said: Bring this dining cloth near so that we may occupy ourselves with it (eating). Then immediately (feeling regret over these words of his) he said: I seek forgiveness from Allah! Since I accepted Islam I have never spoken a word without holding its reins and weighing it fully before speaking, except this word of mine. (Remember,) Muhammad (peace and blessings be upon him) did not say this; rather, he (peace and blessings be upon him) said: "O Shaddad, when you see people hoarding treasures of gold and silver, then store up these words as your treasure: 'Allahumma inni as'alukat-tathabbuta fil-umur, wa 'azimatar-rushd, wa as'aluka shukra ni'matik, wa husna 'ibadatik, wa as'aluka qalban salima, wa lisanan sadiqa, wa khuluqan mustaqima, wa astaghfiruka lima ta'lam, wa as'aluka min khayri ma ta'lam, wa a'udhu bika min sharri ma ta'lam, innaka anta 'allamul-ghuyub' (O Allah, I ask You for steadfastness in all matters and firmness upon right guidance; I ask You for the ability to be grateful for Your blessing and to worship You in the best way; I ask You for a sound heart, a truthful tongue and upright character; I seek Your forgiveness for all the sins that are within Your knowledge; I ask You for all the good that is within Your knowledge; and I seek refuge in You from all the evil that is within Your knowledge. Indeed, You alone are the Knower of all that is hidden)."
This hadith is sahih on the condition of Imam Muslim, but the two Shaykhs did not record it.