TIPITAKA Volume 35 : PALI ROMAN Abhidhamma Pitaka Vol 2 : Abhi. Vibhaṅgo

[458] Cattāro satipaṭṭhānā idha bhikkhu kāye kāyānupassī viharati vedanāsu vedanānupassī viharati citte cittānupassī viharati dhammesu dhammānupassī viharati.