The Satipaṭṭhāna Sutta (Sanskrit: Smṛtyupasthāna Sūtra, The Discourse on the Establishing of Mindfulness) and the Mahāsatipaṭṭhāna Sutta (The Great Discourse on the Establishing of Mindfulness) are two of the most important and widely studied discourses in the Pali Canon of Theravada Buddhism, acting as the foundation for Buddhist mindfulness meditation practice. A similar parallel sutra is found in the Madhyama Āgama of the Sarvastivadin school, and has been embraced by contemporary Mahayana practitioners such as Thich Nhat Hanh.
These discourses (Pāli: sutta) provide a means for practicing mindfulness in a variety of contexts and potentially continuously. Famously, the Buddha declares at the beginning of this discourse:
"This is the direct way [Pāli: ekāyano ... maggo], monks, for the purification of beings, for the overcoming of sorrow and lamentation, for the extinguishing of suffering and grief, for walking on the path of truth, for the realization of nibbāna...."
The meditation techniques identified in this sutta can be practiced individually or successively or in an interwoven fashion.
Example via www.ramdass.org: Mindfulness: A Practical Guide to Awakening