Sunan an-Nasa'i, Book 10, Hadith 49 (In-Book) ⓘ
It was narrated from 'Abdullah bin Abi Qatadah, from his father that the Prophet said: "I stand in prayer, then I hear a child crying, so I make my prayer brief, because I do not want to cause hardship for his mother."
أَخْبَرَنَا سُوَيْدُ بْنُ نَصْرٍ، قَالَ حَدَّثَنَا عَبْدُ اللَّهِ، عَنِ الأَوْزَاعِيِّ، قَالَ حَدَّثَنِي يَحْيَى بْنُ أَبِي كَثِيرٍ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي قَتَادَةَ، عَنْ أَبِيهِ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " إِنِّي لأَقُومُ فِي الصَّلاَةِ فَأَسْمَعُ بُكَاءَ الصَّبِيِّ فَأُوجِزُ فِي صَلاَتِي كَرَاهِيَةَ أَنْ أَشُقَّ عَلَى أُمِّهِ " .
also referenced under: Hadith 825 (Reference) & Volume 1, Book 10, Hadith 826 (DarusSalam)