Ānāpānasati Sutta: Mindfulness of Breathing. Majjhima Nikāya, Theravāda Sutta 118. There is the case where a monk, having gone to the wilderness, to the shade of a tree, sits down folding his legs crosswise, holding his body erect, and establishing mindfulness to the fore. Always mindful, he breathes in; mindful he breathes out. Breathing in long, he discerns, ‘I am breathing in long’;

Kāyagatāsati Sutta: Mindfulness of the Body. Majjhima Nikāya, Theravāda Sutta 119. Monk reflects on this very body from the soles of the feet on up, from the crown of the head on down, surrounded by skin and full of various kinds of unclean things: ‘In this body there are head hairs, body hairs, nails, teeth, skin, flesh, tendons, bones, bone marrow, kidneys, heart, liver, pleura

Discourse to Girimānanda, Aṅguttara Nikāya 10:60. At that time venerable Girimānanda was afflicted, suffering, and very sick. Then venerable Ānanda approached the Fortunate One, and after approaching and worshipping the Fortunate One, he sat down on one side. Reverend Sir, venerable Girimānanda is afflicted, suffering, and very sick. Please, reverend Sir, may the Fortunate One approach venerable Girimānanda, taking pity on him.

Mahāsatipaṭṭhāna Sutta, Dīgha Nikāya 22, The Greater Discourse on the Foundations of Mindfulness. Here, monks, a monk abides contemplating body as body, mindful, having put aside hankering and fretting for the world; he abides contemplating feelings as feelings...; he abides contemplating mind as mind...; he abides contemplating mind-objects as mind-objects, ardent, clearly aware and mindful, having put aside hankering and fretting for the world.', */

The Long Discourse Giving Advice to Rāhula (Mahārāhulovādasuttaṁ, MN 62) An important discourse by the Buddha to his son Rāhula on the development of meditation on the elements as a precursor to mindfulness while breathing; from Majjhima Nikāya (MN:62) or Middle Length Discourses of Buddha. Whatever form there is, Rāhula, past, future, or present,“This is not mine, I am not this, this is not my

Satipaṭṭhāna Sutta - The Foundations of Mindfulness, Majjhima Nikāya, Pāḷi Theravāda Canon. - the 4 Foundations of Mindfulness: "Bhikkhus, this is the direct path for the purification of beings, for the surmounting of sorrow and lamentation, for the disappearance of pain and grief, for the attainment of the true way, for the realisation of Nibbāna" contemplating the body as a body, feelings as feelings

Chapter X 54 Ānāpānasamyutta Connected Discourses on Breathing I. ONE THING 1 (1) One Thing At Sāvatth ī . There the Blessed One said this: Bhikkhus, one thing, when developed and cultivated, is of great fruit and benefit. What one thing? - Mindfulness of breathing . And how, Bhikkhus, is mindfulness of breathing developed and cultivated so that it is of great fruit and benefit?

Setting in Motion the Wheel of the Dhamma, Dhammacakkappavattana Sutta, Buddha’s very first discourse, from the Samyutta Nikāya, Theravāda Pāḷi Canon of Buddha Sūtras. Dhammacakkappavattana Sutta is a Buddhist text that is considered by Buddhists to be a record of the first sermon given by Gautama Buddha. The main topic of this sutta is the Four Noble Truths, the Middle Way, impermanence, and dependent origination.

8. Metta Sutta, Discourse on the loving-kindness, of Sutta Nipāta, Khuddaka Nikāya, Theravāda Pāḷi Canon of Buddha Sūtras. One who wishes to attain insight-knowledge of the peace and tranquillity of Nibbāna and who is thus wise in his own welfare should practise the following noble conduct: He should refrain from doing the slightest evil that could possibly invite censure or disapproval by the wise persons.