Musar for Shabbat 266:6
אבא שאול אומר ואנוהו הוי דומה לו מה הוא חנון ורחום אף אתה היה חנון ורחום
be thou like Him: just as He is gracious and compassionate, so be thou gracious and compassionate.) — Rather said R. Ashi, Which [Tanna] is this? It is R. Jose. For we learnt: Whether it is clearly visible or it is not clearly visible,<span class="x" onmousemove="('comment',' Viz., the crescent of the New Moon, which had to be seen and attested by two witnesses before the Beth din could sanctify the beginning of the month, v. R.H. 21b. ');"><sup>10</sup></span> the Sabbath is desecrated on its account.<span class="x" onmousemove="('comment',' By the two witnesses appointed to look out for it. They must come to the Beth din to testify, even if it is the Sabbath and they are without the tehum (q.v. Glos.), though since it is clearly visible the Beth din is in any case aware of its presence. ');"><sup>11</sup></span>