Ibn Umar (may Allah be pleased with them both) narrates from the Prophet (peace and blessings be upon him): "Any man who calls his brother a disbeliever, the word returns to one of the two of them."
On this basis, the testimony of the people of desires (ahl al-ahwa'), when they have an interpretation, stands valid.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الشهادات / 20902