Al-Allaamah Ahmad Bin Yahyah An-Najmi (rahimahullaah) stated that when Abul Hasan Al-Maribi was asked whether Ikhwaan al Muslimeen are from Ahlus Sunnah, he replied: ‘Yes’. 
Al-Allaamah Abdul Muhsin Al-Abbaad (may Allaah preserve him) said:
If you are with them (i.e. Ikhwaan) – even if you are from the filthiest of people and even if you are from the raafidah, you are still their brother and companion. And for this reason from their methodology is that they gather every Tom, Dick and Harry, even the Raafidiy who hates and detests the Sahaabah…
Al-Allaamah Saaleh Al-Fawzaan (may Allaah preserve him) said:
All praise is due to Allaah, and salaat and salaam upon our Prophet Muhammad, his family and his companions.
My view with regards to the Muslim Brotherhood is that they are partisans (Hizbiyyoon) who covet the attainment of ruler ship; and that they do not give concern to calling to the correcting of the creed (Aqeedah).
And they do not distinguish between their followers, between the Sunni (person upon the Sunnah) and the bid’ee (person upon innovation).
As for the speech (found) in an audio recording that has come from me, then it is a slip of the tongue and does not change my stance in the slightest. 
Written by Saalih Ibn Al-Fawzaan Al-Fawzaan
Translated by: Hasan Somali
The Arabic Text
” الحمد لله رب العالمين والصلاة والسلام
على نبينا محمد وعلى آله وصحبه
رأيي في الإخوان المسلمين أنهم حزبيون يريدون التوصل إلى الحكم ولا يهتمون بالدعوة إلى تصحيح العقيدة ولا يفرقون في أتباعهم بين السني والبدعي .
وما جاء في الكلام الشفهي المسجل عني فهو سبق لسان لا يغير من رأيي فيهم شيئا”.
صالح بن فوزان الفوزان
 Al-Fataawa Al-Jaleelah. Pages 220-225
 Al-Fataawaa Al-Muhimmah Fee Tabseeril Ummah: pages 177-179;
 Source: http://www.albaidha.net/vb/showthread.php?t=38314