Death of the mother of Sa'd ibn Ubadah may Allah be pleased with them both in Year 5 after the Hijrah (5 AH)
اتبع مسار القصة لتفهم هذا الحدث خطوة خطوة.

A limited-family event with little impact in the context of the events of Year 5 after the Hijrah (5 AH)
And in this year: the mother of Sa'd ibn Ubadah may Allah be pleased with him died.
What is meant is that the mother of Sa'd ibn Ubadah may Allah be pleased with them both died in this year, and that is all the information given.
Recording the death of a woman among the events of Year 5 after the Hijrah (5 AH)
It reflects an aspect of the reports about Companion families in Madinah
the mother of Sa'd ibn Ubadah is the mother of the noble Companion Sa'd ibn Ubadah al-Ansari al-Khazraji may Allah be pleased with him, the leader of the Khazraj and one of the chiefs of the Ansar. Her name in biographical works is: Amrah bint Mas'ud, one of the women of the Ansar. Biographers mention that she accepted Islam and gave allegiance. She became well known in the Sirah and hadith because of the story in which Sa'd ibn Ubadah asked the Prophet ﷺ after her death, saying: My mother has died. May I give charity on her behalf? The Prophet ﷺ said: Yes. He then asked: Which charity is best? He said: Giving water. That became Sa'd's water-supply in Madinah. The importance of this event is in showing that charity on behalf of the dead is permissible, and in the virtue of public benefit works, especially providing water for people. It also shows Sa'd's dutifulness to his mother and his eagerness that good should reach her after her death.
son of the deceased woman
attention to documenting the houses of the Companions
Document important family events within the broader historical context
reflect on the reality of death and record events accurately
It goes no further than the mere mention of the death
In documentation, it is enough to record what is accurately established