Sahih Bukhari Volume 7, Book 72, Hadith Number 830.

Narrated By Abu Huraira : A woman who used to practise tattooing was brought to ‘Umar. ‘Umar got up and said, “I beseech you by Allah, which of you heard the Prophet saying something about tattooing?” l got up and said, “0 chief of the Believers! l heard something.” He said, “What did you hear?” I said, “I heard the Prophet (addressing the ladies), saying, ‘Do not practise tattooing and do not get yourselves tattooed.'”