Ponder over it...

A: Can you furnish a proof that it is not permissible to perform Tahajjud Salah in congregation? But do not present the opinion of the Imaam or the statement of people.

B: So, what proof do you want me to present?

A: Present a Hadith. And that too, it should be an authentic Hadith.

B: Can you show me an authentic Hadith?

A: I can present several to you.

B: However, I am allowed to say that it is not authentic! And you, too, should not present the opinion of the Imaam or the statement of people to say that it is authentic.

A: But - but - but...

B: Ponder over it. Later, you answer me.

[English version of "Alle reflechi...(Tahajjoud avec Jam'ate)" – Al Jamiat – Vol.1 No. 2]