Evidence that reliance upon a created being is minor shirk

The questioner:
Honorable Shaykh. Some scholars have said that reliance upon a created being in matters that are trivial to him is minor shirk. What is the evidence for this view?

The Shaykh:
"Rely upon Allah" This has occurred, so it is not permissible to say, "I relied upon so-and-so." Rather, you say, "I entrusted so-and-so," and there is no harm in that. You say, "I entrusted so-and-so," or "I entrusted you, O so-and-so." As for saying, "I relied upon you" or "I relied upon so-and-so," this is not permissible. This phrase is not valid except for Allah (Mighty and Majestic).

The questioner:
May Allah guide you.

The Shaykh:
. No, that is not what is done. You say, "I worship Allah, then I worship so-and-so," and then the problem is not resolved in this.