A person is considered apostate if he or she converts from Islam to another religion. A person is an apostate even if he or she believes in most of Islam, but denies one or more of its principles or precepts, both verbally or in writing.People are free to leave Buddhism and renounce the religion without any consequence enacted by the Buddhist community.- Buddhism (Wikipedia)
Buddhism (/ˈbʊdɪzəm/ BUU-dih-zəm, US also /ˈbuːd-/ BOOD-), also known as Buddha Dharma, Bauddha and Dharmavinaya (transl. “doctrines and disciplines”), is an Indian religion or philosophical tradition based on teachings attributed to the Buddha. It originated in present-day North India as a śramaṇa–movement in the 5th century BCE, and gradually spread throughout much of Asia via the Silk Road. It is the world’s fourth-largest religion, with over 520 million followers (Buddhists) who comprise seven percent of the global population.