The Two Unavoidable Questions

First: On the Tawheed of Allaah (تبارك وتعالى):

Allaah (عزوجل) said:

{ وَيَوْمَ يُنَادِيهِمْ فَيَقُولُ أَيْنَ شُرَكَائِيَ الَّذِينَ كُنْتُمْ تَزْعُمُونَ } 

 {And (remember) the Day when He will call to them and say: "Where are My (so-called) partners whom you used to assert?"} [Surah al-Qasas (28): 62]

Second: On the Ittiba of the Messenger of Allaah (سبحانه وتعالى):

Allaah (تبارك وتعالى) said:

{ وَيَوْمَ يُنَادِيهِمْ فَيَقُولُ مَاذَا أَجَبْتُمُ الْمُرْسَلِينَ }

{And (remember) the Day (Allâh) will call to them, and say: "What answer gave you to the Messengers?"} [Surah al-Qasas (28): 65]

Source:
http://noorul-furqaan.blogspot.com/2011/04/two-unavoidable-questions.html