This quaint story may be found more fully detailed in the Midrash Tanchuma (see Noah) and the Yalkut on Genesis.  The Mohammedan legend is somewhat similar.  It relates how Satan on the like occasion used the blood of a peacock, of an ape, of a lion, and of a pig, and it deduces from the abuse of the vine the curse that fell on the children of Ham, and ascribes the color of the purple grape to the dark hue which thenceforth tinctured all the fruit of their land as well as their own complexions.

At thirteen years of age, a boy becomes bound to observe the (613) precepts of the law.

Avoth, chap. 5.

Rabbi Ishmael says the law is to be expounded according to thirteen logical rules.

Chullin, fol. 63, col. 1.

    The thirteen rules of Rabbi Ishmael above referred to are not to
    be found together in any part of the Talmud, but they are
    collected for repetition in the Liturgy, and are as follows:—­

    1.  Inference is valid from minor to major.

    2.  From similar phraseology.

    3.  From the gist or main point of one text to that of other
    passages.

    4.  Of general and particular.

    5.  Of particular and general.

    6.  From a general, or a particular and a general, the ruling
    both of the former and the latter is to be according to the
    middle term, i.e., the one which is particularized.

    7.  From a general text that requires a particular instance, and
    vice versa.

    8.  When a particular rule is laid down for something which has
    already been included in a general law, the rule is to apply to
    all.

    9.  When a general rule has an exception, the exception mitigates
    and does not aggravate the rule.

    10.  When a general rule has an exception not according
    therewith, the exception both mitigates and aggravates.

    11.  When an exception to a general rule is made to substantiate
    extraneous matter, that matter cannot be classed under the said
    general rule, unless the Scripture expressly says so.

    12.  The ruling is to be according to the context, or to the
    general drift of the argument.

    13.  When two texts are contradictory, a third is to be sought
    that reconciles them.

Rabbi Akiva was forty years of age when he began to study, and after thirteen years of study he began publicly to teach.

Avoth d’Rab.  Nathan.

Thirteen treasurers and seven directors were appointed to serve in the
Temple. (More there might be, never less.)

Tamid, fol. 27, col. 1.

Thirteen points of law regulate the decisions that require to be made relative to the carcass of a clean bird.

Taharoth, chap. i, mish. 1.