Sheikh Abdul Qadir al-Mandili was a famous scholar in Malay Archipelago. His figure was showed up through the writing of multi-disciplinary knowledge. He was actively producing writing works. Among his work that still being use till this day is Anak Kunci Syurga. The book contained up to 304 hadith by Prophet Muhammad PBUH. This study analyses the unknown status of hadith based on Masadir Asliyyah either it was Maqbul or Mardud. The studied hadith was 52 from 102 of unknown hadith status. The aim of this study is to investigate the status of every hadith that have unknown status. This study also will show up the figure of Sheikh Abdul Qadir al-Mandili in the science of hadith. The research design is using qualitative methodology by analysing the content of Anak Kunci Syurga which is the primer data of the research. The hadith were selected first, then takhrij (extraction and authentication) using the technique that was set up by the scholars. The result showed that there were 42 hadith with Maqbul status from Muttafaq ‘alayh, Sahih and Hassan. The remaining 10 hadith were Mardud status. This study will be contributed to the science of hadith in Malay Archipelago based on this masterpiece work of Sheikh Abdul Qadir al-Mandili.