Narrated Abu Huraira :
Allah's Apostle forbade selling by Mulamasa and Munabadha.
Vol: 003 Book: 034 Hadith: 356
A Selected Hadith
Narrated 'Abdullah:
the Prophet said, "He who slaps his cheeks, tears his clothes and follows the ways and traditions of the Days of Ignorance is not one of us."
Vol: 002 Book: 023 Hadith: 382
A Selected Dua
I seek Your forgiveness.
Info: Abu Dawud, Ibn Majah and At-Tirmidhi. An-Nasa'i recorded it in 'Amalul-Yawm wal-Laylah. Also see the checking of Ibn Al-Qayyim's Zadul-Ma'ad, 2/387.