Todalatantra 3.43

3.43

mūlena darbhayā bhūmau trivāraṃ nikṣipet sudhīḥ
tajjalena saptavāram ātmābhiṣekamācaret //

With the root [mantra], the wise person should throw [water] on the ground three times with darbha-grass; / with that water, he should perform self-consecration seven times.