# Sefer haYashar

> treatise on Jewish ritual authored by Rabbeinu Tam

**Wikidata**: [Q6676785](https://www.wikidata.org/wiki/Q6676785)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Sefer_haYashar_(Rabbeinu_Tam))  
**Source**: https://4ort.xyz/entity/sefer-hayashar-q6676785