pravṛttibhede prayojakaṃ cittam ekam anekeṣām [YS 4.5]

bahūnāṃ cittānāṃ katham ekacittābhiprāyapuraḥsarā pravṛttir iti sarvacittānāṃ prayojakaṃ cittam ekaṇ nirmimīte, tataḥ pravṛttibhedaḥ.