यस्मात्yasmātind.From which, since, as.
यतो यतो निश्चरति मनश्चंचलमस्थिरम् ।
कोशःDictionaries
Apte, Monier-Williams and Macdonell at once. Type in any of fifteen scripts and schemes; the word is converted and looked up wherever it is part of a headword.