Charak Samhita
अदूषयन्तः पुरुषस्य देहं देवादयः स्वैस्तु गुणप्रभावैः। विशन्त्यदृश्यास्तरसा यथैव च्छायातपौ दर्पणसूर्यकान्तौ ॥१८॥
Celestial beings invisibly and swiftly enter into the body of a person by their own supernatural effect without affecting the body of the individual. This simulates with as image enter the mirror and sunlight enters the sun-stone.
english translation
adUSayantaH puruSasya dehaM devAdayaH svaistu guNaprabhAvaiH। vizantyadRzyAstarasA yathaiva cchAyAtapau darpaNasUryakAntau ॥18॥
hk transliteration by Sanscript