Sahih Bukhari
Call to Prayers (Adhaan)
Volume: 001 / Book Number: 011 / Hadith Number: 677
Narrated Anas bin Malik:
The Prophet said, "When I start the prayer I intend to prolong it, but on hearing the cries of a child, I cut short the prayer because I know that the cries of the child will incite its mother's passions."