Uttarajjhayana 26.27

26.27

pasiḍhilapalaṃbalolā egāmosā anegarūvadhuṇā |
kuṇai pamāṇi pamāyaṃ saṃkie gaṇaṇovagaṃ kujjā ||

(One must further avoid) to hold the cloth loosely, or at one corner, or so as to let it flap, or so as to subject it to friction, or so as to shake it in different ways, or if one has made a mistake in the number of foldings (see verse 25) to count (aloud or with the help of the fingers, &c.)