The Deen is Ease

The Prophet, upon him be peace and blessings, once recited two short chapters (al-Falaq and al-Nas)  in the dawn prayer.  When he finished his companions asked him, “You have shortened the prayer?” He (peace be upon him) said, “I heard the crying of a baby and was afraid that his mother would face difficulty.  Recorded by Bukhari (706, 710,868), Abu Dawud (789), Nasa’i (826) and ibn Maja (989-991).

The Messenger of Allah (peace be upon him) was so concerned about the difficulties of a single person that he (peace be upon him) shortened the prayer for the whole congregation.