Kitab-i-Aqdas/Elder74

God has commanded that liquid semen is ceremonially pure. [note 3] This is one of His mercies to mankind. Thank Him with joy and sweetness and do not follow one who was far from the Rising-place of Nearness.

Arise to the service of the Cause in all circumstances. He aids you with an authority which encircles the worlds.

Catch hold of the rope of Purity so that no traces of filth are seen on your clothes. This is what He has commanded, He who is purer than all the pure.

There is no harm, however, in one who has an excuse (for not being clean). Indeed, He is the Merciful, Forgiving One.

Cleanse every unseemly thing (makruh) [note 4] with water which has not changed in three respects. Beware of using water which is changed by the air or something else. Be the very element of purity among mankind. This is what your Master, the Mighty, the Wise One desired of you.