פירוש על שמות 29:39

את הכבש האחד תעשה בבקר, "you will offer the one lamb in the morning, etc." The Torah emphasises the definitive article הכבש, so that there can be no doubt that the one mentioned in verse 41 is not an additional one. The emphasis on the word האחד is to tell us that even if at the time when the daily morning sacrifice was offered there was not yet a second lamb at hand for the daily evening sacrifice, this fact did not disqualify the first lamb from being offered up in the morning. Although we have learned in Menachot 44 that when inaugurating the altar the two lambs' presence was mandatory, this means only that the evening sacrifice must not be offered unless the one for the morning is at hand. A morning sacrifice may be offered even in the absence of a lamb for the offering to be brought the same evening.