Inayat Khan explains Sahib-i-dil

"Besides the words from the original languages, there are other powerful words spoken by the Sahibi-Dil, the illuminated hearts, who possess divine power within them. Such are the words of great teachers, of Prophets and Murshids, and the words spoken by them in ecstasy are especially psychic.  The wise, therefore, sincerely speak good words, and avoid even hearing bad words from another. The words of sufferers of any sort, and those of the illuminated and lovers and devotees are always powerful."