AHMAD 23845:
from Ummah Mātat —
[Machine] To the Messenger of Allah ﷺ, he said: "My mother has passed away, so should I give charity on her behalf?" He replied: "Yes." He then asked: "Which charity is the best?" He said: "Giving water to drink." He said: "That is the watering place of the family of Sa'd in Madinah." Shu'bah said: "So I asked Qatadah, who says that it is the watering place of the family of Sa'd?" Al-Hasan said: "Yes."
أحمد ٢٣٨٤٥:
عن امه ماتت —
لِرَسُولِ اللهِ ﷺ إِنَّ أُمِّي مَاتَتْ أَفَأَتَصَدَّقُ عَنْهَا؟ قَالَ نَعَمْ قَالَ فَأَيُّ الصَّدَقَةِ أَفْضَلُ؟ قَالَ سَقْيُ الْمَاءِ قَالَ فَتِلْكَ سِقَايَةُ آلِ سَعْدٍ بِالْمَدِينَةِ قَالَ شُعْبَةُ فَقُلْتُ لِقَتَادَةَ مَنْ يَقُولُ تِلْكَ سِقَايَةُ آلِ سَعْدٍ قَالَ الْحَسَنُ
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