Talmud su Salmi 55:18

One might think that one may pray all three⁴It will be explained later that the three daily prayers were either inherited from the patriarchs or they were fashioned after the Temple service. The verse in Daniel is not discussed in the order it is written, neither is the order of the verse preserved in the Tosephta (Berakhot 3:6) or in the Babli (31a), whose text is close to the Tosephta. The last remarks about moving one’s lips is neither in the Babli nor in the Tosephta. together - it is explained in Daniel (Dan. 6:11): “Three times a day he fell on his knees, etc.” One might think that one may pray in any direction one wants - the verse says “slits were open for him in the direction of Jerusalem.” One might think that he started after he went into captivity - the verse says “as was his wont from before that.” One might think that one may pray all three at any time he wishes - already David did explain (Ps. 55:18): “Morning, evening, and afternoon.” One might think that one may pray aloud - it was explained about Hannah (1Sam. 1:13): “Hannah was speaking to herself.” One might assume that he might simply think - the verse says “only her lips moved.” How is that? One whispers with one’s lips.