Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “When the human being dies, his deeds come to an end except for three: ongoing charity, beneficial knowledge, or a righteous child who prays for him.”

Source: Sahih Muslim 1631

Grade: Sahih (authentic) according to Muslim

عَنْ أَبِي هُرَيْرَةَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ إِذَا مَاتَ الْإِنْسَانُ انْقَطَعَ عَنْهُ عَمَلُهُ إِلَّا مِنْ ثَلَاثَةٍ إِلَّا مِنْ صَدَقَةٍ جَارِيَةٍ أَوْ عِلْمٍ يُنْتَفَعُ بِهِ أَوْ وَلَدٍ صَالِحٍ يَدْعُو لَهُ

1631 صحيح مسلم كِتَاب الْوَصِيَّةِ بَاب مَا يَلْحَقُ الْإِنْسَانَ مِنْ الثَّوَابِ بَعْدَ وَفَاتِهِ

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' As-Salaamu Alaykum, the word used is "aw" which means "or" whereas "wa" means "and." May Allah bless you. '