Matsya Purana 267.24

267.24

tvameva sarvajyotīṃṣi dīpo'yaṃ pratigṛhyatām.
tatastvanena mantreṇa dhūpaṃ dadyādvicakṣaṇaḥ .. 267.23

Then 40 lights should be lit up and offered after circumambulation, by reciting the following mantra —' You are the light of the sun and the moon You are the flash of lightning and fire You are the light of all Be gracious enough to accept the light offered by me" Then incense should be offered by reciting the following mantra, viz —24 25