I Am the Third Disciple of Buddha

From ancient times to the present, what people know is that Buddha had 10 disciples, namely: Shariputra, Moggallana, Mahakassapa, Aniruddha, Subhuti, Puruna, Kachanyan, ‌Upali‌, Rahula‌, ‌Ananda‌. But little did they know that Buddha actually had a total of thirteenth disciples, among whom Buddha's favorite was the third disciple, Sakyamuni Buddha.