Shiva Purana
संस्मरेन्मे महामंत्रं सर्वकामफलप्रदम्॥ नवात्मकं पिंडभूतं स्वां छायां संनिरीक्षयेत् ॥ ५ ॥
Let him remember this great mantra which bestows the fruits of all desires. One should observe his own shadow which has become a nine-fold mass.
english translation
saMsmarenme mahAmaMtraM sarvakAmaphalapradam॥ navAtmakaM piMDabhUtaM svAM chAyAM saMnirIkSayet ॥ 5 ॥
hk transliteration by Sanscript