when god desires to guide someone he opens his breast to islam and whoever he wills to let go astray he causes his breast to be constricted as if he had to climb up to the skies. that is how god heaps ignominy upon those who refuse to believe.
فمن يرد الله أن يهديه يشرح صدره للإسلام ومن يرد أن يضله يجعل صدره ضيقا حرجا كأنما يصعد في السماء كذلك يجعل الله الرجس على الذين لا يؤمنون