Halakhah for Niddah 70:55
בשלמא לרב דאמר מעין אחד הוא משום הכי בעיא שבעה ימים נקיים
childbirth, the prescribed number of whose unclean days had passed,<span class="x" onmousemove="('comment',' Lit., 'completed'. ');"><sup>53</sup></span> but not to a woman who gave birth in <i>zibah</i> who is required also to count seven clean days.<span class="x" onmousemove="('comment',' After the zibah. So long as she had not counted these days she remains subject to the uncleanness of zibah. ');"><sup>54</sup></span> Come and hear: Her sickness shall be unclean<span class="x" onmousemove="('comment',' Lev. XII, 2. ');"><sup>55</sup></span> includes<span class="x" onmousemove="('comment',' Since otherwise the text is superfluous after the previous statement 'then she shall be unclean seven days as in the days of impurity' (ibid.). ');"><sup>56</sup></span> the man who had intercourse with her;<span class="x" onmousemove="('comment',' Sc. that he becomes as unclean as she. ');"><sup>57</sup></span> 'her sickness shall be unclean'<span class="x" onmousemove="('comment',' Lev. XII, 2. ');"><sup>55</sup></span> includes<span class="x" onmousemove="('comment',' V. p. 246. n. 12. ');"><sup>58</sup></span> the nights;<span class="x" onmousemove="('comment',' I.e., that the uncleanness is not restricted to the days, though 'days' only were spoken of in the context. ');"><sup>59</sup></span> 'her sickness shall she be unclean'<span class="x" onmousemove="('comment',' Lev. XII, 2. ');"><sup>60</sup></span> includes<span class="x" onmousemove="('comment',' V. p. 246. n. 12. ');"><sup>58</sup></span> a woman who gave birth while in <i>zibah</i> who remains in her uncleanness<span class="x" onmousemove="('comment',' After all discharge had ceased. ');"><sup>61</sup></span> until seven clean days have passed.<span class="x" onmousemove="('comment',' Infra 37b. ');"><sup>62</sup></span> This<span class="x" onmousemove="('comment',' The last mentioned ruling. ');"><sup>63</sup></span> is quite intelligible according to Rab who said that there exists only one source, since it is for this reason that she<span class="x" onmousemove="('comment',' To attain cleanness. ');"><sup>64</sup></span> requires seven clean days,<span class="x" onmousemove="('comment',' The discharge emanating from the same source as the unclean blood, the Torah (by its insertion of the superfluous text mentioned) ordained that cleanness cannot be attained before the woman had counted seven clean days. ');"><sup>65</sup></span>