Sahih Al Bukhari Hadith number 710

Narrated Anas bin Malik: The Prophet, said, “Whenever 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.”

10  Call to Prayers (Adhaan) Hadith number 710 Volume no 1 Chapter: 65 (Whoever cuts short As-Salat (the prayer) on hearing the cries of a child.)