In wijādah a person finds another hadith scholar's written material without having personally heard it, without the scholar necessarily sending it to him, and without established permission to narrate it. The transparent formula is something like “wajadtu bi-khaṭṭi fulān”: “I found it in so-and-so's handwriting.”
“Wajadtu bi-khaṭṭi fulān”
“I found it written in so-and-so's hand.”
A researcher may discover an old notebook in a library. Confirming the notebook's authenticity matters, but it does not convert discovery into hearing the author personally.
Caution: if no direct or recognized mode of reception is established, saying “he narrated to me” falsely creates a transmission event that did not occur.