Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
tirmidhi:1038Muḥammad b. Bashhār > Yaḥyá b. Saʿīd > Saʿīd b. Abū ʿArūbah > Qatādah > Saʿīd b. al-Musayyab

"Umm Sa'd died while the Prophet was absent. So when he arrived he performed Salat over her, and a month had already passed."  

الترمذي:١٠٣٨حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ عَنْ سَعِيدِ بْنِ أَبِي عَرُوبَةَ عَنْ قَتَادَةَ عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ

أَنَّ أُمَّ سَعْدٍ مَاتَتْ وَالنَّبِيُّ ﷺ غَائِبٌ فَلَمَّا قَدِمَ صَلَّى عَلَيْهَا وَقَدْ مَضَى لِذَلِكَ شَهْرٌ