question #3 Sahih al-Bukhari 1322, Book 23, Hadith 79 : What can be learned from the practice of passing by graves in the context of Islamic teachings?

Ash-Shu`bi said, “Somebody who passed along with your Prophet (p.b.u.h) by a grave that was
separate from the other graves informed me (saying), “The Prophet (ﷺ)
led us (in the prayer) and we aligned behind him.” We said, “O Abu `Amr! Who told you this
narration?” He replied, “Ibn `Abbas.”