Талмуд к Бамидбар 29:35

The Sabbath enters into the number of the days of mourning¹Cf. M.Ḳ. 19a (Sonc. ed., p. 121). but does not interrupt;²Although all mourning is suspended on the Sabbath it is yet reckoned as one of the seven days, and the remaining days of mourning continue after the Sabbath. Festivals interrupt³Cancel the rest of the days of mourning. but do not enter into the number.⁴If the burial took place during the Festival. R. Eliezer said: Since the destruction of the Temple, ‘Aẓereth⁵lit. ‘solemn assembly’, the name given in Rabbinic literature to Pentecost. The Rabbis regarded this Festival as the complement of Passover in the same way that Shemini ‘Aẓereth (cf. Num. 29, 35) is the complement of Tabernacles. is reckoned as the Sabbath [during the period of mourning]. Rabban Gamaliel⁶So GRA; V has ‘Rabban Simeon b. Gamaliel’. said: New Year and the Day of Atonement are [in this respect] like the Festivals; but the Sages say: The rule is according to the view of neither, but ‘Aẓereth is like the Festivals and the New Year and Day of Atonement are like the Sabbath.