Sa'd bin Tariq, Abu Malik سعد بن طارق بن أشيم أبو مالك الأشجعي · Chapters Regarding Funerals

It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) offered the funeral prayer, then he came to the grave of the deceased and scattered three handfuls of earth from the side of (the deceased’s) head.