ما هو نص حديث "لا عدوى في الدين" وما معناه؟

The hadith "No 'adwa (contagion) and no tiyara (superstitious omens)" is narrated with multiple wordings. It negates 'adwa, meaning the transmission of disease from the sick to the healthy, and it negates tiyara, meaning pessimism based on what is seen, heard, or known. It also negates hama and safar, referring to the false beliefs associated with them. One should reconcile the hadith's negation of contagion with its affirmation in other hadiths by understanding that the negation is not of existence, but of self-effect; the true effector is Allah. Contagion is a cause by which disease may transmit by Allah's decree. The Muslim must rely on Allah and put their trust in Him, while also taking precautions and avoiding places of affliction.