Narrated Abd Huraira and Abu Sa'id:
Allah's Apostle saw some expectoration on the wall of the mosque; he took gravel and scraped it off and said, "If anyone of you wanted to spit, he should neither spit in front of...
O Allah, Lord of the seven heavens and all they overshadow, Lord of the seven worlds and all they uphold, Lord of the devils and all they lead astray, Lord of the winds and all they scatter. I ask You for the goodness...
-> Read More Info: Al-Hakim who graded it authentic and Ath-Tfaahabi agreed 2/100, and Ibn As-Sunni (no. 524). Al-Hafidh graded it good in his checking of Al-'Athkdr 5/154. Ibn Baz said in Tuhfatul-'Akhydr p. 37, that An-Nasa'i recorded it with a good chain of narration.