The Noble Shaykh Zayd al-Madkhalee (may Allah have mercy upon him) stated:

It is not befitting for the Muslims that their brotherhood/sisterhood is merely speech and smiling, (when in reality) there exists between them opposition in the hearts from which the tongues speak. Rather it is obligatory that their brother/sisterhood is genuine in that which is apparent and hidden. A believing brother/sister does not harbor hatred  against his believing brothers/sisters. (This is so) even if there exists between them matters of opposition in the attainment of personal or worldly affairs. Indeed these matters do not leave for an opening for him to harbor hatred against his Muslim brothers/sisters. Rather it is obligatory that he is one who is sincere in the matter of brotherhood/sisterhood and that he is truthful, in order that the hearts unite and harmonize upon the truth.

Source: Awdahul Ma’aanee Sharh Muqaddimah Risaalah Ibn Zayd al-Qayrawaanee

Translated By Abu Yusuf Khaleefah
Masjid Nur Allah NYC, Queens, NY 11368
20th September 2015 – 6th Dhul Hijjah 1436