Abhaya Sutra: To Prince Abhaya on Right Speech
Acintita Sutra: The Four Unconjecturables
Dhammacakkapavattana Sutta: Setting the Wheel of Dhamma in Motion or the Four Noble Truths in the Hinayana tradition is considered the First Sermon of the Buddha after His enlightenment, taught to the five ascetics.
Heart Sutra: The essence of the Maha Prajnaparamita Sutra that is often chanted in many Buddhist temples.
Maha-nidana Sutta: This is one of the most profound discourses in the Pali canon. It gives an extended treatment of the teachings of dependent co-arising (paticca samuppada) and not-self (anatta) in an outlined context of how these teachings function in practice.
Maha-Satipatthana Sutta: The Great Frames of Reference, The Greater Discourse on the Four Foundations of Mindfulness, it is the fundamental sutra on meditation.
Merits and Original Vows of Tathagata Medicine Guru with Lapis Lazuli Light Sutra:
Vajrasamadhi Sutra or The Diamond-Absorption Sutra: A discourse on the Single-Taste Absolute Reality Dharma for those in the dharma-ending age that forms the foundation for the Makhyamaka system and other teachings, given in response to questions raised by seven holy ones.
Vimalakirti Nirdesa Sutra: Famous sutra in which basic mahayana principles are presented as a dialogue between an enlightened layman, Vimalakirti, and famous Buddhist figures. Vimalakirti (5th -6th BCE) was the first incarnation of Dorje Chang Buddha into this world.