Sahih Al Bukhari Hadith Number 851

Narrated `Uqba: I offered the `Asr prayer behind the Prophet (peace be upon him) at Medina. When he had finished the prayer with Taslim, he got up hurriedly and went out by crossing the rows of the people to one of the dwellings of his wives. The people got scared at his speed . The Prophet (peace be upon him) came back and found the people surprised at his haste and said to them, “I remembered a piece of gold Lying in my house and I did not like it to divert my attention from Allah’s worship, so I have ordered it to be distributed (in charity).

10  Call to Prayers (Adhaan)
Hadith number 851
Volume no 1
Chapter: 158 (Whoever led the people in Salat (prayer) and remembered an rent matter or necessity and had to pass over the people (to carry out that)