Is it permissible to knock more than three times in cases of dire necessity?

Question:
May Allah reward you. Honorable Shaykh, regarding the saying of the Prophet (peace and blessings be upon him) that one should seek permission three times: if I want to see my companion for an important, urgent matter, should I knock on the door more than three times?

Answer:
No, the apparent evidence says no. But you can call him a second time. Nowadays, the mobile phone allows you to reach someone anywhere; call him on the mobile phone. Yes.