Al-Mu'minun 23:101

Fa-itha nufikha fee assoorifala ansaba baynahum yawma-ithin walayatasaaloon

So when the Horn is blown, no relationship will there be among them that Day, nor will they ask about one another.

Thereafter, when the Sūr (the trumpet) is blown, no ties of kinship will remain between them any more, nor will they inquire about one another.