I understand you're looking for an article or information about the Yoga Tarangini in PDF format. However, I cannot directly provide or link to a PDF file, as that may involve copyright restrictions. Instead, I can offer guidance on where to find it and share a summary article about this important text. Yoga Tarangini (योग तरंगिणी) is a classical Sanskrit commentary on the Yoga Sūtras of Patañjali , written by Śrī Rāma Tīrtha (or sometimes attributed to Svāmī Rāma Tīrtha). The title means "Waves of Yoga," reflecting its flowing, insightful exposition of Patañjali's aphorisms.