Hadith.2664 - It was narrated from Al-Hasan ibn Ziyad, who said:
I said to Abu Abdullah عليه السلام: "My servant poured water for me to perform ablution, and I was unaware that there was fragrance (dustashan) in it. I then washed my hands while I was in Ihram."
Imam عليه السلام said: "Give something in charity as an expiation for that."