SB 11.27.10

pūrvaṁ snānaṁ prakurvīta
 dhauta-danto ’ṅga-śuddhaye
ubhayair api ca snānaṁ
 mantrair mṛd-grahaṇādinā
Word for word: 
pūrvam — first; snānam — bath; prakurvīta — one should perform; dhauta — having cleaned; dantaḥ — his teeth; aṅga — of the body; śuddhaye — for purification; ubhayaiḥ — with both kinds; api ca — also; snānam — bathing; mantraiḥ — with mantras; mṛt-grahaṇa-ādinā — by smearing with earth and so on.
Translation: 
One should first purify his body by cleansing his teeth and bathing. Then one should perform a second cleansing by smearing the body with earth and chanting both Vedic and tantric mantras.