Shareek bin Abu Numair narrates: He heard Sayyiduna Anas bin Malik (may Allah be pleased with him) saying, "I have not performed prayer behind anyone who offered a prayer more concise and more complete than the Prophet Muhammad (peace be upon him). Sometimes the Prophet (peace be upon him) would hear the sound of a child crying behind him, so he would shorten the prayer, fearing that the child's mother might fall into trial."