To protect the Yadus, His personal devotees, from Kaṁsa’s attack, the Personality of Godhead, Viśvātmā, the Supreme Soul of everyone, ordered Yoga-māyā as follows.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
भगवानपि विश्वात्मा विदित्वा कंसजं भयम् । यदूनां निजनाथानां योगमायां समादिशत्
bhagavānapi viśvātmā viditvā kaṃsajaṃ bhayam | yadūnāṃ nijanāthānāṃ yogamāyāṃ samādiśat
SB 10.2.6