Wikipedia
Triṃśikā-vijñaptimātratā
The Triṃśikā-vijñaptimātratā ( Sanskrit; ) is a brief poetic treatise by the Indian Buddhist monk Vasubandhu. It was composed in the 4th century CE and became one of the core texts for the Yogācāra school of Mahāyāna Buddhism. The title Triṃśikā-vijñaptimātratā means, "Thirty Verses on Consciousness Only."