Find the source of the block

I made several links to blocks in other pages, But I can’t find now the source of the link
EX. i have a block that ends with: ^87e4fe
But I can’t remember where from it was linked
[is there any way to assimilate AUTOMATICLY linking blocks two-ways link?]

In the search bar, type the block ID like ^87e4fe and press enter after that Obsidian will show you all occurrences of the block in your vault and manually check each reference to identify where the block is linked from.
Obsidian doesn’t currently support automatic two-way linking. You need to manually establish links in both directions.